clarifer

[tomanytanks]

i used a clarifer to get rid of some clouding now my tank smells or rotten egg. will the filtration sort this out or do i need to change the water again? I have a 90 gallon koi with a filstar xp 3, xp 4, and a smartfilter 55.

[melosu58]

The rotten egg smell is Hydrogen Sulfide. You might want to run some GAC if possible.