We keep our Acans/Micros growing under Ecotech Radio LED’s, nutrition is provided by Polyplab Reef Roids and/or LRS frozen foods. Acans/Micros thrive in nutrient rich environments with detectable PO4, NO3, and a DKH of 8(many corals will respond poorly to high DKH, please take that into consideration). It is our experience that most Acans/Micros do best in low light(less than 75 PAR). Rainbow Acans can and often will change colors under different light. WYSIWYG