Black stuff in filter media?

[dwebb1031]

So I assume that this is bacterial growth, but I also know it's not good to assume. Periodically I have to rinse my filter of the stuff because it clogs them. Any advise is welcome.

 

[dwebb1031]

Bump

 

[Nicknackzz13]

Hey bud

Im still a Noob at all this SW stuff, but from what ive seen on the web it may be black algae? and i believe you should probably clean it all off and away rid off, as it isnt good for the tank, i got dark green to black cr@p in my filter too that i clean every so often but so far none in the tank other than Diatoms

 

[blacktippr]

Maybe too much flow through carbon reactor(canister)?

 

[mila sheehan]

Never seen such a concentration of black stuff in filter media before, does the rest of the reef seem okay?

 

[dwebb1031]

Yea I dose vinegar and it's only in the sump filtration. It's definitely not black algae.