I haven't had an algae issue until recently. I'm trying to hopefully get to the point where vodka dosing can replace my in-tank refugium. So the instability is mine... and expected while I try to dial things in. I've stopped running my fuge light 24/7 since my nitrates bottomed out last week. Last 35% WC was 4 days ago. Todays numbers are:
Alk - 11.9 (Red Sea Pro)
Nitrate - 5.7
Phos - .15
Salinity - 35