New rockscape complete for the peninsula!

Hello everyone! I am having trouble keeping my phosphates up. I am consistently at 0.00

I am dosing sodium nitrate which keeps my nitrates consistently between 9.0 - 11.0

I also have a cyanobacteria outbreak that I can't shake off with chemi-clean. I am using reef roids daily to try and raise phosphates. I have lost almost all my LPS since this situation came about. If anyone can give insight it would be greatly appreciated. Thank you!

One of my favorite rocks in my tank. Shows me the beauty of what happens when you let nature do its thing. And special guest in the picture "Prince" my purple tang.

Things are looking pretty nice the day after a water change. Nice side view of the tank!

To all that dose all for reef. Why would my alkalinity drop with no change in Calcium with AFR dosing?