White Slime Algae

[Teamtang92]

I have noticed this algae for some time now. Not sure when it initially started. My display tank is a 75 gallon and my sump is a 40 gallon. The pictures I provided are in my display. It looks like it’s started to kill my Montipora. I also noticed the algae growing in my Chaeto. Can anyone tell me what kind of algae this is and how I can get rid of it. I’ve tried turning my tank lights of for a couple days (3 total) it didn’t really work. I don’t run carbon or gfo. I run a skimmer, and chaeto. I don’t dose anything and I feed mysis and brine shrimp daily with the occasional flake food and nori. I have a scopa tang, starry blenny, 3 blue green chromis, 3 clownfish, and malnerus wrasse, 3 dwarf blue legged crabs. I have an 8 hour lighting cycle and a 10 hour refugium cycle at night.

I have tons of flow with 2 maxspect gyre 250s. If you have anymore questions about my setup let me know. I just want to tackle this algae before it really gets out of control. I would guess and say this algae has been around for a couple months. My setup is a year and 1 month old.

Thank you in advance for your help!

 

[clown99]

Could be sponge.

 

[VKP01]

Could be sponge.

^^ I agree, looks like a sponge. Algae won’t typically grow in a shaded area like that.

 

[Teamtang92]

Could be sponge.

I do have pineapple sponges throughout my tank but this doesn’t look like a sponge but I don’t know much about sponges.
I’ll look online and see if I can find a sponge that looks like what’s in my rock.

Thank you for your help!!

 

[Teamtang92]

^^ I agree, looks like a sponge. Algae won’t typically grow in a shaded area like that.

Are sponges harmful? Is it something I should be worried about?

It wasn’t always shaded like that. I moved my lights apart to make it darker in the center.

 

[VKP01]

Not harmful unless it grows on your corals. If that happens it can be scraped off, otherwise just leave it alone. Here’s a picture of one from this thread: