Just remember that most stony corals don't eat phytoplankton, but need zooplankton. The phytoplankton feeds sand bed animals, which then produce zooplankton (larvae) which can help keep stony corals fed. I found my lps corals accept krill, formula 1, 2, and especially formula VHP.

I remember Ken telling me to feed a mixture of decapsulated brine shrimp eggs and nanochloropsis (sp?) which is one of the main ingredients in Tahitian blend. I did this for over a year (still do) to build a healthy sand bed. DTs live phyto has the reputation for being the best, but most expensive, phytoplankton food. since I switched to DTs from algae pastes, I definitely notice less problem algae and overall a more "healthy" looking tank.

Matt