thanks
@mr_tap_water I, being frugal, don't want to waste a light so figured on changing one in 3 months <g>. From what I've read, the green is the prelude to the coraline. That bright green doesn't brush off with a brush or turkey baster and the snails can't get it off either. Sometimes I can see a little path, but the rocks are still green beneath. I used to use the baster to get rid of the other algae when the tank was really ugly.
I just tested phos and they are 0. I use gfo. I'm guessing the high nitrates are my issue. Also I've pointed the wavemaker directly at patches on the rock and didn't affect it at all. I'll look into getting another one for the other side of tank. I have 2 returns and 1 wave maker which is one steady right now, not bursts. I also adjusted the 2 returns to change flow and again, didn't change anything. Right now, the returns are pointing up for surface agitation. I also got some more bio spira to try to up the good bacteria. Figure I'll use 1/3 of the bottle. The rest on the refugium.
I tried to syphon out with my water change hose but it isn't strong enough so maybe I'll try it without the vacumn head--just the hose. The cyano on the sand is a mat. I did use a net to get some out. when lights come one I'll see if there is any change. The red slime remover hasn't wiped it out. I still see it. Will hope its a bit better and then see tomorrow. Guessing I might have to repeat the dose.
Once I get this under control, I need to work on numbers. The IO salt keeps my cal at 400, mg at 1200 and alk around 7. Question on testing alk with the red sea kit. Does that first drop count toward the total drops or just the drops added after.
I have the kent 2 part but haven't used it for a while as I wanted the tank to get through this second cycle first: lesson learned: no sea cucs or anything else big that hides under sand and rock....
I'm quite determined to have a pretty tank again...