I can't think of any articles off hand but I can tell you you should try and keep your PO4 level below .03 ppm and since you are talking sps, nitrates as low as possible.
You may post your question in the SPS forum as many folks in there have been down this road.
Also if your alkalinity is in fact 5.5 dkh then that is too low and it should be raised to at least 7 dkh. 9 may be better.