What cause coralline algae to flake off?

[IEReefer]

So I've been running a frag tank where I only scrape the front and side panel of the tank. 10 months later, I have tons of coralline algae growing on the back panel and bottom panel. It's getting cake on layers. What I've noticed also, some of the coralline is flaking off and piling up in dead spots. Just wanted to know what cause coralline to flake off. If it settles too long on my frag tiles, then it starts to grow aggressively where its winning a lot and grows over the base of the SPS.

My question, what causes this to happen and how do you handle this coralline algae aggressive growth?

Thanks,
Mel

 

[pirate2876]

Check your magnesium

 

[IEReefer]

Check your magnesium

High or causes it to flake off?

 

[OHBA]

High or causes it to flake off?

Did you find a cause? Was your mag high?

 

[ScottB]

Curious about this also. Between bouts of Dino’s in my frag tanks, coralline grows super fast. Some Sps encrust over it. Otherwise can’t and start curling up along the edges where they meet.
As to flaking off, as it thickens I have read here that the bond to the glass loses strength and it lets go. I’ve seen it a few times and read about it here too.

 

[OHBA]

Curious about this also. Between bouts of Dino’s in my frag tanks, coralline grows super fast. Some Sps encrust over it. Otherwise can’t and start curling up along the edges where they meet.
As to flaking off, as it thickens I have read here that the bond to the glass loses strength and it lets go. I’ve seen it a few times and read about it here too.

That’s what I’m thinking. Only flakes off on back glass. Flakes from the inside out and leaves rings.

Top photo of glass. Bottom is overflow.