Tank has been running since last May, was set up with established and cycled rock from other tanks so there was no cycle to speak of. Lighting runs 10.5 hours each day. Some corals have been in there since last may much of the others have been in 5 or 6 months. Salinity is stable as I run an ATO. Other parameters seem a fairly stable as well although I don't check every day. But they are similar when I do test. Flow is about 300gph through the sump and I have an MP40 running about 2/3 full power which gives plenty of water movement. Test kits are a mix of Elos and API. I have also tried some hagen test kits too for phosphate and ammonia/nitrate/nitrite. But all read zero or very close to it when I test so I don't think I have a major nutrient issue as I can't see getting false negatives all the time. I'm also not seeing any algae blooms; just the normal dusting on the glass that needs to be cleaned every few days.
I didn't think a cup of skimate per week was that much. I see others pulling that much in a few days.
As for bulbs I have 3 x actinics, 1 x fiji purple, 2 x 75.25 and 2 x 12,00K actinic white. Lorenzo, what kind of fish are the 5 you have? Some eat and poop more then others. I have 3 fairly small fish in a large tank so that is why I am thinking low biolad as a possible issue. I was reading these:
http://www.reefkeeping.com/issues/20...ture/index.php
http://glassbox-design.com/2008/amin...-do-they-work/