ID please

[JSelley]

I recently moved my tank in July when we moved into a new apartment. I never had this grey blob stuff until we moved. Any help with an ID and possible cause? Amonia, nitrates and nitrites all at zero and pH is at 7.9-8.0 (it's always been that low, but healthy fish and corals though)
I suck this crap up with my turkey baster and it's back within a couple of days. Tank has been established since January. It's a 75 gallon

 

[Subsea]

Considering your tank is recently (January is recent) set up, I don’t see a problem that is not typical for a new tank. Continue sand bed maintenance using gravel vac every water change.

Zero nitrogen is not desirable and often contributes to nuisance algae. Zero nitrogen & zero phosphate is a time bomb for Dino to thrive.

 

[JSelley]

Considering your tank is recently (January is recent) set up, I don’t see a problem that is not typical for a new tank. Continue sand bed maintenance using gravel vac every water change.

Zero nitrogen is not desirable and often contributes to nuisance algae. Zero nitrogen & zero phosphate is a time bomb for Dino to thrive.

Thank you. I've been told it's cyano (spelling?) Bacteria. I recently changed what LFS I get my water from, so I'm wondering if that has something to do with it. I might go back to buying gallon jugs of rodi water from Walmart or Kroger since it's the same price, just harder to mix

 

[Subsea]

Cynobacteria is normal in our aquariums. When competition is eliminated with zero nutrients, Cynobacteria thrives

I think you should feed more and stop chasing numbers like zero nutrients.