Live rock turned neon green

[AFrank]

We've had this tank for a bout 8 years and this rock turned neon green. Covers most of the rock and won't scrub with anything.

 

[EeyoreIsMySpiritAnimal]

It usually happens sooner than 8 years, but when my rocks first got coralline algae, it was neon green before it took on a more purple color...

 

[EeyoreIsMySpiritAnimal]

Do you have a picture?

 

[AFrank]

We've had this tank for a bout 8 years and this rock turned neon green. Covers most of the rock and won't scrub with anything.

I thought I attached one, weird. Here it is.

 

[alliw]

I’m new to the salt hobby but have bits of something like this on parts of my rock. When I scrape it with my fingernails it looks like a smoky dust cloud and the shrimp ran right over to see. My levels for ph are around 8 and nitrates very close to 0 as my bio load includes just one Molly and a blood shrimp. I just recently added my first coral and hope to keep going as I think the issue with mine is low nitrates. My tank is just new (6 months) so hard to tell. I removed the protein skimmer today in hopes of achieving more of a balance. I know this is an old thread. Maybe you found an answer? Please share if you did! Thanks!

 

[ryanjohn1]

I’ve had neon green, pink, purple, and now red

 

[alliw]

I’ve had neon green, pink, purple, and now red

In white or blue light?

 

[alliw]

I’ve had neon green, pink, purple, and now red

 

[alliw]

Whew!! For a second I was concerned

 

[ryanjohn1]

In white or blue light?

Either

 

[alliw]

Either

Well.. I suppose that’s mildly reassuring