Hi all! Long time lurker here, but the first time I'm posting. Long story short: I run a mixed reef setup with 20+ years old live rock and my nutrients keep bottoming out, to the point where my pulsating Xenia has all but disappeared and GSP won't even open. SPS are growing fairly well, to the...
Tank Background:
15 gallon Nano, 2.5 months old
Dosing All For Reef 4.8 mL/day + Kalkwasser in ATO
Have some brown hair algae on rocks
Running skimmer w/CO2 scrubber for ^ pH
Filter Floss (not currently changing floss until flow issues, to retain nutrients)
Have increased feedings already quite...