Algae Problem

[Scavenger]

I believe grape calurpa what the OP meant. In that case, there are some extreme measures that I've read have had success. Powerwash, cook, nuke, throw off high cliff ect. There may be more subdued methods I`m not aware of though.

[Rus]

Try a Naso , i've had success with them before , but you may need to remove it once it's done it's job , depending on your tank size . As they do get quite large in size.

[MikeP]

My Naso loves it. I grow it in my sump and feed it to him once in a while. I believe other tangs will eat it too.

[Mikee]

A naso or powder blue tang will get rid of it i know my new powder blue tang i got loves algae hes always cleaning my rocks same with my coral beauty. IMO emerald crabs dont do much mine hasnt + i never see him.

[Mikee]

But remember if you tank isnt 90g+ I wouldnt recommend keeping it for good. Also if you tank isnt mature yet..being 6 months+ atleast than you may need to try something else.