Hey everyone! So I gave a question, I have a 55 gallon tank and have a emperor 400 on it my tanks been running for like 2 years. My question is that my friend gave me a brand new emperor 400 would it be beneficial to have the 2nd filter with like no filters other than foam to catch partials. Any information will help thanks in advance!
HAPPY REEFIN`!
HAPPY REEFIN`!

