Lighting and algae...

[Enigma]

Which one of your tanks? Mexican Turbo Snails love GHA. They are bulldozers, and they will knock things around, but they'll get the job done.

I'd add one Mexican Turbo to the 27 gallon, and two to the 75 gallon. At those numbers they should hopefully be able to sustain themselves after cleaning everything up. Basically, one Mexican Turbo for every 30 gallons. I have two in my 10 gallon display, and I need to supplement them with nori. There isn't a spec of nuisance algae in my tank: with the exception of a little bit of GHA on one of their shells.

Not sure about your lighting question.

[SmallFry]

Sorry, I should have mentioned its the 75.. I already have a few snails in there - five turbos (not Mexican to my knowledge) and the one of three nassarius that allowed himself to be captured from the other tank. I don't want to be too over-snailed since I have a Kole Tang who eats a lot of algae in the 27 which is now functioning as quarantine. He goes to the big tank at the weekend..

Do you think if I put one of the turbos right on the GSP frag it'd eat the stuff out from between the stalks/polyps?

[Enigma]

I'm not sure if the non-Mexican turbos are great at eating algae or not.

My Mexican Turbos regularly clean my daisy polyps and the rest of my corals.