Well, the numbers "look good" but GHA is now taking over in the DT
The GHA is growing way faster in the tank than in the scrubber!
P04 measured 3 times 0.00, 0.01, & 0.00 on Hanna.
N03 below 0.025 on RedSea Pro kit.
Ammonia 0
ALK in the 8s
Either the rock is full of P04 or I'm just not doing a good enough job keeping detritus off of it...
After months of battling (and winning?) to be able to stop using GFO, now I'm losing ground to GHA??? Doesn't make sense to me...
I've decided to use an algaecide (dimethyliminoethylene dichloride, ethoxylate) before the GHA smothers any corals.
2 Doses in and:
Good news is the GHA in the tank is beginning to weaken to the point it can be plucked (previously it was like trying to tear fishing line).
Bad news is the algaecide has completely wiped the HOG clean of any growth. I harvested what was its weekly growth, it came completely out, and now there is *no sign* of regrowth. Bright white growth plate again~
Hopefully the GHA in the DT also gives way, I'll get the rocks cleaned up, and then I'll stop the algeacide and get the ATS going again.
The frustrating thing is I feel like things were "under control" until I took the GFO offline (and got a P04 spike from the rocks?). Granted, I was starving my fish and corals (lost a few) to get/keep the nutrients down. With negligible P04 & N03 being measured for many months I'm thinking I need to up my feeding...but I'm worried that's just going to further fuel the algae.