If I have a three stage sump, First stage is where water comes in, Second is refugium (chaeto & LR), Third is return. Should I have the skimmer in the first or second stage?
I ask this because my first stage is 2 inches higher than my 2 & 3rd stage so I feel like a lot of the nasty surface stuff is falling down and going into the later stages. In fact, i can usually see a oily film layer almost on the later stages.
This is making me consider moving my chaeto and LR into the first stage with the drain and my skimmer on its own in the 2nd stage
Option 1 is my current setup.
I ask this because my first stage is 2 inches higher than my 2 & 3rd stage so I feel like a lot of the nasty surface stuff is falling down and going into the later stages. In fact, i can usually see a oily film layer almost on the later stages.
This is making me consider moving my chaeto and LR into the first stage with the drain and my skimmer on its own in the 2nd stage
Option 1 is my current setup.