hi people,
I'm in process of setting up a tank (4x1.5x1.5 - courtesy of sis Ming69).
So far, I've gotten the tank & a Ehiem 2028. Am thinking of adding sump tank but am quite confused by the sequence of filtering.
When the water flows from the main tank to the sump tank, what filter should it goto first ? I read elsewhere that the water should be processed by a protein skimmer first, then filter through the mechanical, biological & ???? (one more is what huh? can't rem liao) then it goes to a reservoir then to a chiller then a pump to go back to the main tank. But yet when i see some sump setups, it seems to be filtered first then goto the protein skimmer. Which is right ?
Logically, if it's prefiltered first, then the skimmer don't have to work so hard ? So why not prefilter first ?
What is recommended for the sump media and how much ? i.e 3 kg LR, 1kg crushed oyster shells, stuff in 2in of cotton etc etc