Nice scaping!
My gut feel tells me your Acans will be exposed to too much light. Acans need very low PAR (around 100 PAR levels or less) to maintain its puffiness & color. Its about the same vicinity as your SPS - so its either your SPS has insufficient light or your acans will be overexposed.
bro santa monica,just a few questions.how do u retrieve algae from your tank?cause normally algae grow on rocks and glass.normaly tank water will wash them away when scrub them.also,if we dint rub the algae at the panel,izit wil do also?or will take longer time to establish?TIA.