Current Events > I impulse bought a 75 gallon tank for fish. Some tips?

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IdiotMachine
12/20/20 8:44:26 PM
#1:


Never had fish before. I thought itd be easy, but 30 minutes into googling proved otherwise.

Any beginner tips?

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__aCEr__
12/20/20 8:44:58 PM
#2:


Make sure there is water in it before you put the fish in.

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Flauros
12/20/20 8:45:05 PM
#3:


if yo use sand instead of water, you will never have to clean the tank out cuz the fish wont live long enough to shit in it.

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a-c-a-b
12/20/20 8:46:47 PM
#4:


@MabusIncarnate

Mabus knows a lot on this topic.
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Tyranthraxus
12/20/20 8:47:33 PM
#5:


Don't drink the fish tank cleaner product

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MabusIncarnate
12/20/20 9:03:45 PM
#6:


Some basics to start with

Get a filter rated for up to 100 or 120 gallons, don't undershoot it and not give yourself enough filtration. Also get a heater, probably a 150 or 200 watt. 78 degrees is ideal.

You want to add dechlorinated water, gravel, decor, set up your filter and heater. Run the tank full of water empty for 2 weeks, add no fish until then, and then start off slow, don't dump in 30 fish at once.

The rule of thumb is an inch of fish per gallon of water, so like 37 2 inch fish, 25 3 inch fish, etc. Also factor in growth size to adulthood.

I would start with community tropical fish. Platys, Mollies, Swordtails are very durable and great for beginners. Danios and White Clouds are basically immortal unless you make a big mistake.

Every week, change out 20% of the water. This is entirely important to remove nitrate levels from the water. Don't just top it off after some evaporates and call it good, many people make this mistake. I suggest a gravel siphon vac, a Python is the best imo but a manual one is fine also. I'd watch a youtube video on gravel vaccing your tank.

Don't overfeed, but feed a good variety of tropical flake food, bloodworms and brine shrimp. They can be bought freeze dried, or the healthier version, frozen. It looks like a little ice cube tray of frozen worms and you just drop it in the tank and they will pick it apart.

I suggest a cheap hospital tank, a 10 gallon kit at a pet chain with everything included is under $50. If you get a sick fish, it's ideal to remove it from your primary tank and into the smaller hospital tank so you can treat it properly.

No chemicals. You want a liquid water dechlorinator. If your fish get sick, ick is the most common and it looks like little white dots on their body, and you don't have a hospital tank, raise the water temperature to 81 degrees for one week. They also sell fish antibiotics which is basically the same as human grade. There is a wide variety that will treat infections and parasites. If you cannot resolve with the temperature change, a few drops of tea tree oil can kill parasites. Chemicals that they sell at the pet store that turn your water blue, and liquid algae killer are garbage products that will ruin your water balance.

If and when you start getting algae, get a decent sized plecostomus. They are miracle workers and will naturally eat it all and keep things clean. They get very large so plan for that, i'd suggest starting with a 4 to 5 inch one for a 75 gallon. They can get over 2 feet long, a lot of local fish stores would likely be okay taking it if it gets too big and sell you a new smaller one.

I've kept fish since I was like 10 and i'm now 39, i've had freshwater and saltwater, and kept live plants, corals, and a wide range of fish. Feel free to @ me anytime for anything, or DM me, i'm happy to help.

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SamsungGearS2
12/20/20 9:15:26 PM
#7:


Return it.

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SonicZack
12/20/20 9:20:19 PM
#8:


I think Bala Sharks are best in large tanks like that.

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IdiotMachine
12/20/20 9:50:56 PM
#9:


MabusIncarnate posted...
Some basics to start with

Get a filter rated for up to 100 or 120 gallons, don't undershoot it and not give yourself enough filtration. Also get a heater, probably a 150 or 200 watt. 78 degrees is ideal.

You want to add dechlorinated water, gravel, decor, set up your filter and heater. Run the tank full of water empty for 2 weeks, add no fish until then, and then start off slow, don't dump in 30 fish at once.

The rule of thumb is an inch of fish per gallon of water, so like 37 2 inch fish, 25 3 inch fish, etc. Also factor in growth size to adulthood.

I would start with community tropical fish. Platys, Mollies, Swordtails are very durable and great for beginners. Danios and White Clouds are basically immortal unless you make a big mistake.

Every week, change out 20% of the water. This is entirely important to remove nitrate levels from the water. Don't just top it off after some evaporates and call it good, many people make this mistake. I suggest a gravel siphon vac, a Python is the best imo but a manual one is fine also. I'd watch a youtube video on gravel vaccing your tank.

Don't overfeed, but feed a good variety of tropical flake food, bloodworms and brine shrimp. They can be bought freeze dried, or the healthier version, frozen. It looks like a little ice cube tray of frozen worms and you just drop it in the tank and they will pick it apart.

I suggest a cheap hospital tank, a 10 gallon kit at a pet chain with everything included is under $50. If you get a sick fish, it's ideal to remove it from your primary tank and into the smaller hospital tank so you can treat it properly.

No chemicals. You want a liquid water dechlorinator. If your fish get sick, ick is the most common and it looks like little white dots on their body, and you don't have a hospital tank, raise the water temperature to 81 degrees for one week. They also sell fish antibiotics which is basically the same as human grade. There is a wide variety that will treat infections and parasites. If you cannot resolve with the temperature change, a few drops of tea tree oil can kill parasites. Chemicals that they sell at the pet store that turn your water blue, and liquid algae killer are garbage products that will ruin your water balance.

If and when you start getting algae, get a decent sized plecostomus. They are miracle workers and will naturally eat it all and keep things clean. They get very large so plan for that, i'd suggest starting with a 4 to 5 inch one for a 75 gallon. They can get over 2 feet long, a lot of local fish stores would likely be okay taking it if it gets too big and sell you a new smaller one.

I've kept fish since I was like 10 and i'm now 39, i've had freshwater and saltwater, and kept live plants, corals, and a wide range of fish. Feel free to @ me anytime for anything, or DM me, i'm happy to help.
Wow thank you! Regarding filters: Why are cartridge/canister filters like 10x the cost of the waterfall filters? Should I invest in that or is the cheaper $50 filters good enough?

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IdiotMachine
12/20/20 9:55:20 PM
#10:


Also, is it possible to have a variety of fish and plants so that I dont have to replace 20 gallons every two weeks? Im not sure how I can do that, unless I buy another 20 gallon tank, since what Ive read online is to keep the water in a bucket or whatnot for a day or two before putting it in the tank.

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Evening_Dragon
12/20/20 9:56:17 PM
#11:


Keeping fish is more complicated than cooking or brewing, and, y'know, you can't really fuck up. Or else.

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MabusIncarnate
12/20/20 9:57:57 PM
#12:


Honestly the canister filter is much more efficient because you can add whatever media you want on the inside and you always get 100% filtration. An overflow is fine, but what happens when it starts to get dirty, the water will flow over the cartridge and you lose a lot of filtration. A quality filter will save you from a lot more potential issues, an overflow is fine but if this is something you get into seriously, i'd suggest a Fluval 407 canister filter for your tank.

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MabusIncarnate
12/20/20 10:01:11 PM
#13:


Evening_Dragon posted...
Keeping fish is more complicated than cooking or brewing, and, y'know, you can't really fuck up. Or else.
Yeah honestly there's a lot of chemistry to it and early stages can be frustrating until you start to learn more. You will lose fish, even experts lose fish in new tanks, it's gonna happen. It's going to take months for your tank to stabilize and become established, that's just how the water chemistry works. The good news is, the bigger the tank, the easier it is and the more time you have to catch and fix issues. 75 gallon is a really good sized tank, my first was a 29 gallon.

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Evening_Dragon
12/20/20 10:05:17 PM
#14:


Like realtalk, Fishtanks are for people who decided that pokemon breeding doesn't go far enough, and that Hoenn is the best region and fuck that one reviewer

Fishtanks are for people who called their chem profs basic

fishtanks are for that one girl from that movie where she fucks the fishman

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MabusIncarnate
12/20/20 10:09:46 PM
#15:




I also recommend getting a dozen or so nerite snails, they are inexpensive, help eat crap on the bottom of the tank, look cool and add character to the tank. Wait for a couple months though so food for them can build up, including a little algae. Don't put your tank near a window or where the sunlight will hit it, that may turn your water green.

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IdiotMachine
12/20/20 10:09:55 PM
#16:


MabusIncarnate posted...
Honestly the canister filter is much more efficient because you can add whatever media you want on the inside and you always get 100% filtration. An overflow is fine, but what happens when it starts to get dirty, the water will flow over the cartridge and you lose a lot of filtration. A quality filter will save you from a lot more potential issues, an overflow is fine but if this is something you get into seriously, i'd suggest a Fluval 407 canister filter for your tank.
Gotcha. Ill start out with an overflow and if this hobby becomes significant, Ill look into canister filters.

Im looking into Koi fish now.

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MabusIncarnate
12/20/20 10:11:52 PM
#17:


IdiotMachine posted...
Gotcha. Ill start out with an overflow and if this hobby becomes significant, Ill look into canister filters.

Im looking into Koi fish now.
If you do Koi, they probably don't even need a heater, they are a cold water fish. They are pretty hardy honestly, and it's a better pick over goldfish.

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LostForest
12/21/20 9:22:58 PM
#18:


Get loaches, they're great community fish with a lot of personality, and always get along with tankmates. Yoyo loaches are my faaaavorite.

The only thing is if you get loaches, you can't have shrimp. They'll annihilate them lol. Though, crayfish will hold up against loaches pretty well if you want something lobster-y.

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Beveren_Rabbit
12/21/20 9:39:54 PM
#19:


How to make sure the water is safe/optimal before you start putting in fish/live creatures in?
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brestugo
12/21/20 9:43:45 PM
#20:


__aCEr__ posted...
Make sure there is water in it before you put the fish in.
+1

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LostForest
12/21/20 9:45:08 PM
#21:


Oh and also, TC since Mabus didn't mention it, Don't put fish into your tank for at bare minimum a week, since the first week or so is when the whole nitrogen cycle takes place. The levels will be all over the place, the water might be cloudy, etc...
As far as levels go, the most important thing to monitor in your tank is pH. You want it to hover around neutral for a community tank, but slightly alkaline or acidic is fine for most common species.
Like Mabus said though, don't bother with chemical stuff to alter levels, like pH up/down. If your water is acidic and you need to raise it, you can put in a cuttlebone or seashells. If your water is too alkaline and you need to lower the pH, put in driftwood that you buy from a fish store. (Note: Some types of wood will tint the water a yellow color, though YMMV on that since some people like that natural look, and others don't)

Also, don't bother with live plants unless you want a challenge. I have a paludarium tank with live plants both above and beneath the surface, so I'm being a huge stickler for it, but TBQH live aquatic plants are huge pain in the ass.

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brestugo
12/21/20 9:46:30 PM
#22:


Saltwater is infinitely more work than freshwater.
In all cases (salt-or freshwater) keep the nitrogen low. Bottom feeders help with this.
Get a toothbrush to clean algae
Get a damn good filter.

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LostForest
12/21/20 9:48:11 PM
#23:


brestugo posted...
Saltwater is infinitely more work than freshwater.

Agreed, i honestly have never had any interest in doing a saltwater tank. I know there's all sorts of exotic shit you can only get with salt, but it's just not worth it to me personally. Plus I feel like there's a greater variety of non-fish that you can stick into freshwater tanks.

I might try a brackish tank someday though since I like mudskippers a lot.

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Smackems
12/21/20 9:49:44 PM
#24:


Jesus this sounds like a nightmare

What the fuck, fish? Can't just live in the damn water? Talk about snowflakes

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brestugo
12/21/20 9:51:38 PM
#25:


LostForest posted...
Agreed, i honestly have never had any interest in doing a saltwater tank. I know there's all sorts of exotic shit you can only get with salt, but it's just not worth it to me personally. Plus I feel like there's a greater variety of non-fish that you can stick into freshwater tanks.

I might try a brackish tank someday though since I like mudskippers a lot.
I had a saltwater tank for 10 years and I spent about 10 -12 hours a week on it. It's like having a garden or something. The slightest temperature change or spike in nitrogen can kill.

They're nice but you've gotta be retired or something to monitor everything that's going on.

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brestugo
12/21/20 9:56:21 PM
#26:


Beveren_Rabbit posted...
How to make sure the water is safe/optimal before you start putting in fish/live creatures in?
They have testing kits for this.

I also rarely changed the water. Top it off and rely on that damn good filter you should have purchased. Changing the water can shock the fish.

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Beveren_Rabbit
12/21/20 10:05:31 PM
#27:


I thought you're supposed to change a portion of the water every few weeks. Now I'm not supposed to change the water?
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MabusIncarnate
12/21/20 10:07:44 PM
#28:


I had a brackish terrarium once with archer fish. I'd put crickets on the viney land part and the archer fish would shoot water at them with a squirt out of their mouths to knock them off the branch, into the water and eat them. That was probably my coolest tank. I got deployed in the military and I didnt know anyone who could take care of it so I had to break it down.

If I recall correctly, baking soda can be used to alter PH levels safely in a tank.

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OnlyTheTruth
12/21/20 10:08:15 PM
#29:


IdiotMachine posted...
Never had fish before. I thought itd be easy, but 30 minutes into googling proved otherwise.

Any beginner tips?
The way pro fishman described it to you sounds like a Nightmare from Hell #_#.

So my method for how to easily replace the water each week.

You have a 75 gallon tank, to replace 20% of it a week. Monday morning, Wednesday morning, Friday morning. Take a five gallon bucket, dip it into your fish tank suck up 5 gallons. Dump it down your toilet (it will flush its self). Then fill it up with water, add what ever stuff you like to use to it and a declorinator. Fill it back up. That will cycle 15 gallons a week (20% of 75).

Sunday morning just top it off.

If this is to much trouble for you, get some fish from your local river. They will never die no matter how much you torture them to death #_#.
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MabusIncarnate
12/21/20 10:10:03 PM
#30:


Beveren_Rabbit posted...
I thought you're supposed to change a portion of the water every few weeks. Now I'm not supposed to change the water?
You syphon 20% of the water and replace it once a week, this is common practice to remove nitrates from the water. Maybe he means changing all of the water at once. Water evaporates but nitrates do not, only topping it off from evaporation will create a slow and poisonous nitrate environment. A weekly 20% water change is entirely safe, I've been doing it with all my tanks for 29 years.

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DyingPancake
12/21/20 10:28:02 PM
#31:


I always wanted a fish tank ever since my best friend had a small one in his room when we were kids, but once I actually started looking into how much actually goes into it (atleast for a beginner) I just dropped it.

Maybe one day when I feel really devoted to it

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LostForest
12/21/20 11:51:34 PM
#32:


DyingPancake posted...
I always wanted a fish tank ever since my best friend had a small one in his room when we were kids, but once I actually started looking into how much actually goes into it (atleast for a beginner) I just dropped it.

Maybe one day when I feel really devoted to it

Honestly if you just do a small 10 gallon community tank with nothing fancy, it's not a ton of work. All the super-advice in this thread is mostly for like, srsbiz or bigger setups.

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IdiotMachine
12/22/20 12:12:10 AM
#33:


LostForest posted...
Honestly if you just do a small 10 gallon community tank with nothing fancy, it's not a ton of work. All the super-advice in this thread is mostly for like, srsbiz or bigger setups.
Ive read smaller tanks are harder to take care of because theyre more susceptible to changes in water chemistry.

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#34
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#35
Post #35 was unavailable or deleted.
MabusIncarnate
12/22/20 12:20:39 AM
#36:


IdiotMachine posted...
Ive read smaller tanks are harder to take care of because theyre more susceptible to changes in water chemistry.
This is normally true, but as mentioned earlier, some fish for beginners like danios, white clouds, platys, mollies, and many tetras are very tough to kill and will live through harsher tank conditions.

You had mentioned koi, they are a very dirty, and while hardy, like goldfish, you need to keep a closer eye on the nitrate and ammonia levels. These fish also get large so I wouldn't suggest them for a 10 gallon, it would severely stunt their growth.

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OnlyTheTruth
12/22/20 1:16:27 PM
#37:


MabusIncarnate posted...
This is normally true, but as mentioned earlier, some fish for beginners like danios, white clouds, platys, mollies, and many tetras are very tough to kill and will live through harsher tank conditions.

You had mentioned koi, they are a very dirty, and while hardy, like goldfish, you need to keep a closer eye on the nitrate and ammonia levels. These fish also get large so I wouldn't suggest them for a 10 gallon, it would severely stunt their growth.
Fun fact, Gold Fish get just as large as Koi (2 feet).

It's just most people suck and kill them WAAAAY before their time. (They easily live 15 years, though I find most fish owners kill them in 1-2 years)
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viewmaster_pi
12/22/20 1:29:37 PM
#38:


the beginner tip is not to start with a fucking 75 gallon tank..... enjoy doing water changes on that

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