Hi Pascal and everyone, been a while ehh. I've noticed in the past few months my sps in my one system have looked the best I've ever seen them look over the years and I believe it has to to with dirty water.
Things I've done differently the past 6 months since my tanks haven't been a priority and since my tank crash over the summer. Only one water change (1/4 Oceanic 3/4 Instant Ocean), removed skimmer completely, no carbon or calcium reactor anymore, ONLY adding ALK once or twice a week, top off water, and pellets for fish. I haven't tested my water in months because my corals have been looking good. I know my parameters are all over the place, last I check my DKH was 5 which is why I dose ALK. I do get algae growing in my one tank with no tangs and in my big tank where the tangs can't reach so I just pull it out by hand as needed (once or twice a month), come out in big easy clumps.
Now I have another system thats a 30% bigger with the same parameters/maintenance and the corals don't look nearly as nice. I believe it has to with the water being cleaner. I only have one fish (tang) that I feed every couple days (pellets).
The one thing I do make sure to spend time with is replacing my DI Resin. This is what I believed cause my tank crash over the summer. I can tell a difference in my system/corals when my TDS starts raising to 1 or 2. I change my DI Resin bringing my TDS back to 0 and soon after my corals start smiling.
Once I do get back into the hobby full time I plan on setting up an dump bucket style Algal Turf Scrubber and strangely continue to NOT use a skimmer since I'm currently not using one and things are fine. My Skimmer is a beast (7 foot) and uses two 90 watt Recirculation pumps, so not running also helps a little on my electric bill.
Hope to see you all around soon some day.
Brent