David S
Aquarium Advice Addict
wait david isnt it over the first under the second then over the third. im pretty sure thats how the bubble trap is because isnt the middle piece of the bubble trap 1 inch off the bottom?
No the way you have it can cause water to cascade into the return pump section causing bubbles which will enter the pump and come out as micro bubbles in the dt because the return pump sections water level drops due to evaporation,if you have it the way I've said that will never happen.This is a common mistake by sump builders.