what i did for my tank is keep mg at 1450, ca at 450, kh ard 10 with dosing of zoxan 2. within 6 mths, my wavemaker was covered fully with coraline till i have to take out n clean....
it will be gd with gentle current. n i dun think they need strong light. how u tell if ur water is stable? have u done a check? sometimes corals take awhile b4 they realli open up. what wavemaker r u using? if current is too strong, u will stress it instead. juz put it somewhere with low - flow flow first. n dun keep moving it...