Originally posted by Mongoose
I heard that actually scraping the alge of the glass with feed the sps also. Is this true?
This is false. Small polyped scleractinians are not herbivorous -- they are carnivorous. They will not consume algae or plant-like organisms.
they get all they need from lighting and from the water.
This isn't always true. Acropora can get over 100% of their carbon from light, depending on the species and the habitat they came from - if in a shaded or deeper area, it won't make it in terms of carbon either and will have to acqure it from feeding. They can get a lot of nitrogen, potentially, without feeding.
As far as foods to feed, Golden Pearls will work well, as with any liquefied foods.
Graham