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Hello this is my first aquarium my brother dropped it off before the army transferred him. I drained the tank and cleaned the gravel really good. I cleaned the filter and put a new cartridge. I cleaned everything up to start fresh. I filled it with conditioned water, cranked temperature to 80...

I understand the majority of the beneficial bacteria live in the filter system but some live in the gravel/substrate. Say I had a established 20 gallon tank with fish and everything. And i had a spare 20 gallon tank that's empty. What if I were to slowly (to keep water clear) siphon the water...

Hello I know alot of the healthy bacteria grows and lives in and on the gravel and vacuuming it isn't a really good idea. What do all of you think if I were to stir the gravel up so the poop and possible left over food and whatever else is settled there gets stirred up into the water column and...

Hi I'm new to aquarium and fish keeping. I been reading up on "cycling" and water quality and all the information. I have a 20 gallon cycled tank. I have 5 black skirt tetras. I read they are peaceful and many consider them semi aggressive. I feel they are semi aggressive and fin nippers. I...