Gifted a 20 litre goldfish set up - The Planted Tank Forum
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post #1 of 3 (permalink) Old 01-22-2017, 03:37 AM Thread Starter
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Gifted a 20 litre goldfish set up

Since I moved, I haven't had any tanks. I've been pining for animals in my rental, and so I sought approval for a nano tank set up, which I got. Then, just as I started reading up on setting up a new planted tank and fell in love with the Japanese ADA minimalistic set ups, one of my friends has gifted me with his 20l AquaOne plastic fish tank because "You wanted fish! I can't keep them any more!"

And boy, oh boy, is it in dire straits. He was a typical LPS purchaser and, as much as I love the guy, he hasn't got a clue or care about the well-being of either his fish or... the aesthetics of the tank. It looks like the tank I had on my desk when I was 10 years old. I'll get some pictures of this tank in all its glory when I have the chance, but to give you a quick idea: it's got bright blue gravel and a "no-fishing" sign.

Anyway, because I'm a grad student and was raised by an engineer, I love researching and DIY stuff. So, while I'm saving up to purchase an ADA tank, I thought hey, this cheapy tank could work as a bit of a trial tank for aquascaping styles and learning about aquatic horticulture - for which I have only minimal experience. And maybe I could use it as a sump tank later!

The only part of this tank I will keep is the filter, which remarkably looks like a AC50 (while an AC70/110 would've been better, I'm counting these small miracles).

Here are some questions!

1. What do I do with these fish? There are two of them crammed into a 5g/20L tank
2. Is it worth working with this plastic structure at all?
3. Will these goldfish eat every plant I try to grow in this tank?
4. Could I change the substrate with the fish in there (read: put them immediately back in the tank after the substrate has been changed over)?

Be aware of two setbacks:
1. The landlord said 1 small tank only
2. I don't want to waste money on another temporary plastic tank until I can buy the ADA
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post #2 of 3 (permalink) Old 01-22-2017, 03:46 AM
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Offer the fish for free on CL to a happy home. Don't keep em. I would not keep any fish apart from newborn fry in that size. I think if I add all the money for my 13 or so common no-name brands up, it won't get close to the price of a small ADA. I'd go for a minimum of 2'x'1x1' size tank. It is still pretty small but you can at least keep fish healthy in it and cram about 50 liters of water in. Still far from adequate for even one goldfish.

Cape Town, South Africa.

Hi. I'm back.
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post #3 of 3 (permalink) Old 01-22-2017, 04:52 AM
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A single fancy goldfish shouldn't be kept in a tank under 20 gallons. Fancies can grow to be 8 inches. A common goldfish or comet shouldn't be kept in a tank under 40 gallons. This kind of goldfish gets to be over 12 inches long. I keep fancy goldfish with crypts, swords, anubias, java fern, and buces without any issues.
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