HEY everyone in tonmo . i would like to use the a hang on filter .can i use juz one coz i dun noe how much an octo needs

Hom many gallons is the tank, and how many gph does the filter run at?

i dun really noe but i noe that my tank is 10g for a pygmy octo :)

Oh well with that size tank, any filter should be able to handle filtration, I would imagine.

i dun really noe but i noe that my tank is 10g for a pygmy octo :)

Pygmys should have at least a 20 to 30 gallon tank; not because of size but because of the amount of waste they can make.

oh ok i will buy one then