My nitrates and alkalinity are diminishing very quickly however my calcium and phosphates are not. Any reason this might be happening? Currently dosing double alkalinity compared to calcium and when I test my alk still going down. Due to a battle with dinos and cyano I have very few corals at this point but a lot of red turf algae covering the rocks. I feed fish 3 times a day but still have to dose 6 caps a week of Neonitro just to keep nitrates at a detectable level.