It is a 90 g tank with a 20 g sump (Eheim 600 gph return), an EHEIM professional II filter, 4 powerheads (1000 gph turnover) 150 lbs lr, 80 lbs aragonite sand, prizm skimmer, 3 actinic 2 blue lights arcadia 190 w total.
I am planning a major upgrade in the next few months especially if I am to keep the grouper. The tank pameters are all in check, except phosphates which are .5 and nitrate which never drop below 20-25 ppm, although they do reach 40-50 if I skip a change.
I change weekly 10-15 gallons, and use RO water.