I'm in the process of reading through this thread - presently on page 26.
Real briefly here are my issues:
1. 190 Display tank /w 450G total water volume - 100G cryptic Fuge /w rock, 100G fuge /w deep sand bed, 80G in sump, 40G in frag tank, and 40G in quarantine/hospital
2. 06/11 Tank is plumbed for automatic water changes into house waste water. Had a ton of relatives in the house - cooking, showers, etc - Sewage backed up into my tank. I could write a book on the horror and hassles. Lost all SPS (except small piece Red Robin Stag), clams, and about 10% of fish. All LPS and 2 softies not affected.
Had major cyno problems used Boyds Chem clean, GAC, lots of water changes. After 6 months tank ready for SPS again.
3. 12/11 Stocked tank /w nice high end SPS frags. Went out of town. Someone opened my auto feeder up all the way dumped a container of food in tank. Tank full of algae again lost all SPS (except RRS) and some LPS due to algae.
Tank is better, but still too much algae and cyno. I believe that my rock has absorbed Po, and it's driving me crazy! Once again I have placed some free SPS frags from friends to see how they will do everything is doing well. Been running GAC and GFO heavily, water changes, lights out, etc.
Anyway seeing this thread really perked my interest because I'm about to yank out my rock and substrate and start over. Unfortunately, I've recently been laid off, so I need to try someting else.
AF came in today and some more Boyd's Chem Clean.
Because I know that I have cyno, I'm thinking of doing the Boyd's and then wait 2 weeks /w heavy water changes. And then depending on the existence of algae starting the AF.
If I understand right, the AF is only active for 24 hours. If this is so, I'll probably shut down GAC and GFO during the 1st 24 hours after dosing AF. Possibly use the AF more as maintenance for algae.
Since I haven't read the whole thread just looking for input before getting started.