Fish for Nothin Posted January 29 Share Posted January 29 What size of tank do I need for two comet goldfish? 1 Link to comment Share on other sites More sharing options...
Lonkley Posted January 29 Share Posted January 29 About 55 gallons. They get to be over a foot long. 1 Link to comment Share on other sites More sharing options...
Fish for Nothin Posted January 29 Author Share Posted January 29 Really? I heard they need bigger. But okay. Link to comment Share on other sites More sharing options...
Whitecloud09 Posted January 29 Share Posted January 29 Always safe to go bigger. Link to comment Share on other sites More sharing options...
Lonkley Posted January 29 Share Posted January 29 Figured you wanted minimum size. Personally for the footprint, I rather have 75 over 55. But for larger fish I'd look more for length and width than water volume. Link to comment Share on other sites More sharing options...
Galabar Posted January 29 Share Posted January 29 (edited) I've got 4 common goldfish in a 55 gallon, and they just keep getting bigger. On a side note, they love duck weed. So, if you want to remove duckweed from a tank, a medium sized common (or comet) is a great idea. 🙂 Edited January 29 by Galabar Link to comment Share on other sites More sharing options...
mynameisnobody Posted January 29 Share Posted January 29 (edited) I keep wakin goldfish in an outdoor pond and they are roughly the same size as a comet. I would get whatever the largest you can afford/fit. They are large and very filthy fish. Honestly, they may be my faves, but the filtration has to be on point or you will be a slave to water changes. 55 gallon tanks are 12” wide and a comet can reach 12” in a little under 2 years. Water volume definitely matters because it can help keep things in order between water changes. The less water volume, the less stable. Edited January 29 by mynameisnobody Link to comment Share on other sites More sharing options...
Biotope Biologist Posted January 29 Share Posted January 29 I had mine in a 55g long for a couple years. She reached about 9” pretty quick. It takes them awhile to hit their 1st growth spurts in my experience. Eventually you will need a 125+ but you can gradually work your way up to that as the fish grow They are messy but a canister filter is more than capable of keeping up. Just don’t keep any plants with them you like, because they are the cows of the underwater world. I lost a $100 anubias that was over 10 years old to her in a matter of months 🥹 along with duckweed they really like grazing on water lettuce and lily pads. 1 Link to comment Share on other sites More sharing options...
Fish for Nothin Posted January 29 Author Share Posted January 29 I was planning to get them in a stock tank. At least 100 gallons. They live with my turtle in a 55 gal. I have old floors and its an old tank so I dont fill it up past the halfway point. 1 Link to comment Share on other sites More sharing options...
mynameisnobody Posted January 29 Share Posted January 29 @Fish for Nothin now you’re talking! 1 Link to comment Share on other sites More sharing options...
Fish for Nothin Posted January 29 Author Share Posted January 29 On 1/29/2024 at 10:43 AM, mynameisnobody said: @Fish for Nothin now you’re talking! I might even go as far as a 150 gal. 1 Link to comment Share on other sites More sharing options...
Supermassive Posted January 29 Share Posted January 29 I recently had to get rid of my goldfish because they outgrew their 29 gallon. I wouldn't get anything smaller than a 100 gallon if you want to keep them long term. 1 Link to comment Share on other sites More sharing options...
Fish for Nothin Posted January 29 Author Share Posted January 29 On 1/29/2024 at 10:43 AM, mynameisnobody said: @Fish for Nothin now you’re talking! I might even go as far as a 150 gal. 2 Link to comment Share on other sites More sharing options...
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