Low Phosphates and Coral

[JonnyTorch]

Hey all.

My 24g tank has been running around .4 - .7 phosphates and wouldn't go down even with phosguard. So I started using Nopox this week to bring them down along with 15ppm nitrates.

After a week of dosing the phosphates are actually undetectable on a salifert test, but nitrates still around 15ppm. (Getting an aqua spin test tomorrow at LFS).

The only thing I've done differently with this tank this week has been Nopox and the phosphates lowering (to seemingly undetectable)

Would this cause my Sunkist bounce to go from open and full, to almost no bubbles and shrunken within 6-7 days? No other changes other than that.

Here's a picture of about 2 weeks ago, compared to just now

 

[KrisReef]

Seems like it could be the case.

 

[JonnyTorch]

Seems like it could be the case.

Thanks Kris. I will probably lay off the nopox and feed a bit more this coming week and see if it comes back around. Battling my phosphates has been a headache. That and small amounts of cyano.