Originally Posted by mfdrookie516
There will only be as much bacteria in a tank as there is food for one... so you'll have about the same amount of bacteria in a 1 gallon bowl as you would a 50000 gallon tank with the same fish.
Cheers, unfortunately my question was probably too vague...I'm currently unsure on what I want to do with my 120L tank and am considering using my two gold fish as an ammonia source to maintain the tanks bioload.
Originally Posted by jlk
120 litres is @30gallons so 2 goldfish in this tank is fully stocked & more than enough ammonia to maintain your bacteria as long as its fully cycled. Goldfish are very messy (poop ALOT) and have a very high bioload so make sure you keep up with frequent pwcs.
Thanks. The tank is indeed fully cycled.
The plan is to move my fish currently in the 120L tank to a new, just cycled (Finally!) 175L tank. However it seemed like a waste to let the 120L tanks microsystem die off so thought I could move my two goldfish that are very much out of place in my other tank to the 120L in order to maintain it.