I have a 125 with built-in overflows that pull water 3" from the floor of the aquarium. I understand the need for a DSB to be at least 4" in depth. Can I "average" my depth? For example, 6" in the back, 3" near the overflow intakes, and 3 or 4" in the front?
Or does a DSB need to be a uniform 4+" to be a DSB?
I asked Patrick, but he wasn't sure...
Or does a DSB need to be a uniform 4+" to be a DSB?
I asked Patrick, but he wasn't sure...