Like white dust all over surface of water???

[txmaverickmh]

Hello All, came home from Thanksgiving trip, had a bit of cyano outbreak, but manageable…more important, I cannot figure out what this is all over water surface???

 

[mtraylor]

Not sure what it is, but throw a filter sock in sump and adjust your water flow to keep dust and substrate from lingering on the surface.

 

[jabberwock]

Need better pics under white light and full tank shot. What type of filtration are you running?

 

[Dan_P]

Hello All, came home from Thanksgiving trip, had a bit of cyano outbreak, but manageable…more important, I cannot figure out what this is all over water surface???

That is also likely a nuisance organism. This accumulation doesn’t happen if sufficient surface water flows back to pump rather than water below the surface flowing back to the pump.