Hello, I am completely new to this... so I apologize for my ignorance.
I am "fish sitting" for my roomate this summer, as he went home to work. He has 2 tanks...
1 55g with 2 Penguin 330 filters, 1 with 2 bio-wheels, the other has none
No undergravel filter, small bubble wand, 1 heater
1 10g...