davy 1983
Aquarium Advice Activist
im bidding on a new bigger tank for my freshwater blackmoors, the tank used to be used for tropical fish is it still ok to use if i give it a good clean out?
A New, Bigger Tank
- Thread starter davy 1983
- Start date
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Mumma.of.two
Aquarium Advice Obsessed
Of course it is.
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davy 1983
Aquarium Advice Activist
forgot to say it has built in filter
Mumma.of.two
Aquarium Advice Obsessed
Most, if not all, of those inbuilt filters are underpowered. What size is the tank and how many goldfish do you have (and plan to keep)? You will need to upgrade the filtration IMO.
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davy 1983
Aquarium Advice Activist
its a juwel 65g, i would like to put a under gravel filter in it if i can, ive got 3 young black moors, but would like to put more fish in it to.
Mumma.of.two
Aquarium Advice Obsessed
65g is good. 
you could easily fit 5 fancy goldfish in a tank that size with adequate filtration. I would strongly advise steering away from the undergravel filters. They can become nitrate factories because of all the waste trapped underneath. IMO you'd be better off getting a HOB (or two) or a canister. Goldies are messy so you want to aim for a filter (or filters) that can turn over 10x the tanks volume per hour. On a 65g tank your looking at 650g/h.
you could easily fit 5 fancy goldfish in a tank that size with adequate filtration. I would strongly advise steering away from the undergravel filters. They can become nitrate factories because of all the waste trapped underneath. IMO you'd be better off getting a HOB (or two) or a canister. Goldies are messy so you want to aim for a filter (or filters) that can turn over 10x the tanks volume per hour. On a 65g tank your looking at 650g/h.
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davy 1983
Aquarium Advice Activist
ok nice one thanks il look into HOBs or canister, cheers
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