im runing 2-250W Helios 20K HQI bulbs in PFO mini pendants powered by PFO HQI ballast.... along with another 260W of mixed PC lighting
i could probably use one more MH but with electricity out here in so cali this tanks already costing me around $100+ a month
the Helios bulbs have a great PAR rating and my corals seem to be happy i keep my softies and LPS more towards the edges and then the sps and clams more in the center
as far as a Ca reactor im using a MRC-CR2 dual chamber reactor with ARM media a jbj dual guage soleniod a pinpoint Ph monitor and a 10lb CO2 bottle
keeps my Ca right at 420 and my alk at 8-9 dkh
heres a few pics