2 year cycle - 0 Nitrate .4 Phosphate

[bkpky]

Chemiclean is an antibiotic that will only work on cyanobacteria. What you have doesn't look much like cyano to me.

Yes, before I went under a scope, some of it was red in the sand bed. Figured it couldn't hurt as I have been at my wits end. I believe the long spell of lower phosphate is starting to turn the tide. Maybe the reef flux is what is helping. All I know is the algae is going away without having to keep the lights out all the time.

 

[bkpky]

Its been a journey the last few months but things have greatly improved. Here is a link to a more detailed journal on my local clubs forum site.
https://xenforo.bigbluereef.com/index.php?threads/algae-covering-chasing-phosphate.4576/

 

[griff500]

Glad it's improved but I'm not sure why you linked out to your club's forum instead of simply saying that the fluconazole that was suggested in this thread had worked?