Brown powdery substance at waters surface?

  • We are currently upgrading MFK. thanks! -neo

MarineMike

Feeder Fish
MFK Member
Jan 31, 2014
243
1
0
Southern California
I've been feeding Massivore ands NLS for over a month now and never had a problem until last week. The only thing I've changed is feeding a bit more Massivore because my fish are growing and seem to like it best. Feeding once a day about 8-10 Massivore and a pinch of NLS. My larger Peacock bass will hit the pellets as they fall, chew on them a little before spring it out, then comes back later after they've softened and swelled a bit. My sun cats and plecto like to chew on them as they soften too. I cleaned most of the residue out 2 days ago while doing a water change but now is back. Suggestions?

The canister return, hydor korilia power head and Marineland power head are all pointed toward the surface for agitation yet this film/dust remains.
 
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