Algae Problem - Revisted

[chromakey]

Good Day:

I have been fighting GHA for the past few months and I also have another type that has taken over one rock and also came in with the last two coral frags. I received some good advice from the last few posts. I reduced my feeding, increased my GFO/GAC, tried to cut the GHA off the rock but didn't really work. I made up an Excel spreadsheet of my tank parameters and activities. Some of my parameters were off and I corrected those ones.

I have some zoas that grew into some GSP and for the last 2 months the zoas/palys have receded and not fully opened up. I was wondering if this could be a source of some of my problems and what you would suggest.

I only have an Elos test kit for Mg and am planning to purchase a Hanna test kit for low level phosphates, and Salifert/Elos for Alk, Ca & Nitrate.

Record of Events:



Gelidium Algae???:


GHA:


GSP & Zoas & GHA:


Right hand side:


Front View:


Left hand View:


Candy Cane Coral with algae (gelidium):