Looking for feedback here... I am having a hard time keeping Alk consistently up. I am targeting 9.0 I am at 7.6 -7.7 Alk after a 20-25% water change with Reef Crystals and 400 CA. Ph is rock steady at 8.3
My setup: 120 mixed reef (Soft, LPS, SPS, Zoa) SCA display, 55 basement sump...