So I just got a 205-gallon acrylic bottom drilled fish tank for my freshwater fish. It has two 1.25 in holes on the bottom. I want to use an old 30 gallon as a sump but I have a few questions.
1. Will using a 30-gallon sump provide enough filtration?
2. Should I use both bottom holes as drains, then return over the top of the tank?
3. What's the easiest way to ensure than the drain and the pump work at the same rates?
4. In terms of setup, which of the pump options in this pic
would work (best) to prefer a flood during a power outage?
I am not too knowledgeable about sumps in general, so feel free to suggest other things you think would be more appropriate. Thanks in advance.