Yes, sorry I missed that. See my edited post above. I am highly skeptical that you are losing the alkalinity via calcification processes which is where we get the 1:1 calcium to alk dosing suggestion. Your calcium consumption is probably much lower with the current selection of soft corals you have and you don’t have a ton of coraline algae sucking it up (I think you mentioned the purple on the rocks was artificial).
In general the rule is don’t dose what you don’t test. You can get away with using the suggested ratios and only testing alk when your tank is more mature and you have a decent load of active stony coral calcification happening, but I don’t think that is the case here. For now I recommend testing your calcium and alkalinity separately and dosing only what is needed. Probably just alk at this point.
I just tested CA and it's a solid 460. Perfect spot. Every time I tested it's always between 440-460. Normally 440 before WC and after WC goes back to 460.
Now it's getting interesting; For the first 3,5 months it was always like that with ALK too. Always stable between 11.5 and 10.5 since I use Red Sea Coral Pro Salt. Never dosed. (FYI I just tested the fresh salt water batch and ALK is 11.5dkh so it's all good there).
I believe this huge deplation started since when I attached the CO2 remover to the hose of my skimmer to raise the ph. And my skimmer is a little bit on the "big side". Actually, my ph was fine too but I took it as an experiment to see if bring any improvements to my tank. At this point, I believe I should remove the CO2 remover from the skimmer and see how ALK and PH gonna act. Do you agree?
Only one remarks:
Actually I have 2 soft corals only and all the rest are big LPS.
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