Today marks 5 weeks of running my 40b skimmerless, with no gfo or gac. When I took everything off-line, I took measurements. Phosphates and nitrates were undetectable. Calcium was 420. I did not measure alkalinity, because I don't have a test kit. Salinity was 1.026. Ph was 8.2. I did a 10g water change. Week 2 I took measurements again, and measurements remained constant. I then did a 5g water change. In weeks 3 and 4 measurements remained constant, so I did a 5g water change each week. Now, in week 5, I have taken my measurements and have found that my parameters have remained constant. I am going to skip this weeks water change.
My tank is a mixed reef. I am having trouble with one of my acros, but I attribute that to a lighting issue. I have moved it lower to see if I can save it. My current bio load consists of a maroon clown, a lawnmower blenny, 2 chromis, a watchman goby, a clown goby, and a neon goby. I still have the sump hooked up, where I plan to have cheto, once I partition off the return pump.
My searches have found a few people running skinnerless, but they seem to stop updating. I'm wondering if anyone else is running their tanks like this, large or small, and what have been their experiences.