Acans receding - looking for suggestions on possible causes

[gregzz4]

All of my corals have been unhappy lately, due to a lack of food
I've doubled the fish food, and started using coral frenzy 2-3 times per week, plus coral vitalizer daily, and some julian's phyto thrown in for good measure

Because my corals were starting to bleach due to a lack of zooxanthellae, I took a suggestion and cut about 8 hours of T5s out of the day, and currently am running 12 hours of blue plus, and 9 hours of 14k coral lite 2 next gen

About a week or so ago, I added some brightwell's aminomega to the coral frenzy. This is right before I noticed the recession

Other than that, the only other thing that's changed is I have gone from 7-10 day WCs to 14 day WCs in an effort to get some nitrates and phosphates

Alk 7.5
Ca 410
Mag 1350-1400
Potassium 3-400
Phosphates >0.05
Nitrates 0
Sg 1.025
pH 8.0-8.15
79F

Any tips, suggestions, thoughts, etc will be greatly appreciated