So I wanted to get some opinions on what I am seeing with my Alkalinity and PH. I have a well established 90 gallon, nearly 10 years old. But a few months ago I gave it a major overhaul and removed a lot of corals and started fresh. It is SPS heavy with large frags to small colonies at the moment.
Anyways, my Alk has been steady at around 9 (using Trident) and my PH on the low end about 7.8 - 8 ish. I decided to add a CO2 scrubber and boy did that make a difference in PH. It climbed to 8.25 - 8.35 essentially in 24 hours. The chart below shows my Alk and PH values overlaid. Orange is Alk and Blue is PH. You can see the spike in PH and an exact corresponding drop off in Alkalinity. From what you see, is this an indication of additional alkalinity consumption from my corals due to the higher PH? Seems like a very fast response in alkalinity consumption. I am now tweaking my Alk dosing (2part) to match the new uptake I am seeing. Anything I should be worried about? My calcium level seems to be unaffected as of yet and hold steady at about 450.
Anyways, my Alk has been steady at around 9 (using Trident) and my PH on the low end about 7.8 - 8 ish. I decided to add a CO2 scrubber and boy did that make a difference in PH. It climbed to 8.25 - 8.35 essentially in 24 hours. The chart below shows my Alk and PH values overlaid. Orange is Alk and Blue is PH. You can see the spike in PH and an exact corresponding drop off in Alkalinity. From what you see, is this an indication of additional alkalinity consumption from my corals due to the higher PH? Seems like a very fast response in alkalinity consumption. I am now tweaking my Alk dosing (2part) to match the new uptake I am seeing. Anything I should be worried about? My calcium level seems to be unaffected as of yet and hold steady at about 450.
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