Kalkwasser film

[Mystikal]

Hello!

Just started using Kalkwasser (Seachem Reef) and notice that it is leaving a white film ontop the water in the sump. Is this normal?


Thanks!

 

[theMeat]

Yes, if you don’t have it covered it will get that film. That film will help protect the water, but a cover is better.
Kalk saturated water losses it’s potency in time. About a week or lil more if coved, less if not