How to get rid of this algae and is it affecting my SPS or will they encrust over it?
I barely have any snails or hermits. I do have four crabs though, I have no other algae besides this "thicker" algae.
Alk is 7
Calc is 420
Phosphate is between 0.03-0.08
Nitrate between 4-8
I barely have any snails or hermits. I do have four crabs though, I have no other algae besides this "thicker" algae.
Alk is 7
Calc is 420
Phosphate is between 0.03-0.08
Nitrate between 4-8
. What are you testing your nutrients with? The reason I am asking is you have green hair algae and the is cause by high phosphates and nitrates. a good level to be at would be around .02 to .03 ppm phosphates and the nitrates between 3 and 5 ppm. 
I just looked it up. That's a shame it's eating your snails, it's so beautiful. But I feel you. Got to get rid of it. I had a crab that was eating all my stuff for two years. It was small enough to hide in my rocks, so I couldn't do anything about it. I thought the mantis shrimp would take care of it, but I guess it wasn't big enough and the crab got it too. 

