my params are sal. .026 ca is at 300 mg is 1400 alk is 15 phos is 0 and no3 is 10 my ph is at 8.6 and im guessing its due to my alk so high right. i just refilled my kallk stirrer and maybe its due to that. but what kind of harm to corals and fish. i did a 20% water change yesterday but no decrease.