I added clownfish and a yellow tang this weekend to a newly cycled tank. Everything was fine until I decided to plumb my refugium in. I don't think I waited long enough for glue to dry. Got impatient and turned flow to fuge. A few hours later tang dead, next morning clowns dead.
So my question is do I need to completely drain all 180 gallon of water or would a 50% change fix
So my question is do I need to completely drain all 180 gallon of water or would a 50% change fix

