Well, after trying to "just feed more," like everyone suggested, I managed to turn my sand brown and my PO4 went nowhere, I decided to take a more calculated approach. I got online and started looking at phosphate suppliments and ended up buying a bottle of Seachem Flourish Phosphorus.
They have two seperate dosing instructions on the bottle. The "beginner" dose is half a cap for every 20g. That's not going to work on my 14g tank... not accurate enough. So the "expert dose has a formula that looks like this...
0.8vp=m
v=total water volume
p=desired phosphate level
m=dose amount
Using that formula and a rough estimate of 12 gallons of water, I came up with 1.2ml and dosed the tank.
0.8×12×0.125=1.2
Hopefully, this will raise my phosphates to a safe level and not cause a spike like the potassium nitrate did.
My green acro is hanging in there, if I get PO4 under control I expect a full recovery. Tissue recession has stopped and it is still holding the bright green color.
The ASL Purple Nurple acro is a dark green, the base has always been that color, but the tip has slowly lost the little bit of purple it had. My LFS, Aquarium Specialty, said that came from a wild colony they got that completely bleached colored back up, got AEFW, bleached from the dip and then colored back up again. It's evidently hard to kill... Once I get some nutrients in the tank I'm hoping I can increase the light and draw more color out.
My forest fire digi didn't completely die, just lost a bunch of tissue. I'm thinking of relocating it lower in the tank but I'm but sure how much it'll help, it's about 7" off the sand. Shallow tank problems.
The duncans are doing wonderful as they always have. I put a second colony in here from my 75g, something is going on in there, I'm not sure what but corals are receding but my BTA looks great. Tested everything and water is good, a litte high on nutrients but it's a LPS softy tank... anyway, duncans.
My two stylos are doing well, the blue more so than the rose. The rose seems to be more temperamental, and will pull it's polyps back if I do anything to the tank...
My pocillopora hasn't had very good OR for a few weeks. It's hanging in there but I think my lack of PO4 is the issue.
Still have 2 weeks of fallow before I can add fish. My 40b QT is full from my 75g being fallow also, they just finished copper treatment today. I also just set up my 10g QT for my birthday fish. I love my fiancee. She got me a small lieutenant tang from the divers den. It arrives tomorrow, then 30 days in QT for him and after that I'll look at getting fish for this tank. Im still thinking a sapphire damsel and a rainford goby, maybe one more fish.