I have a 29gal DT with 20gal sump. Mixed reef mostly LPS with some softies and SPS. I have 35+ frags in the tank. I started dosing ESV 2-part when I had around 10 corals and was dosing 13ml a day which is a little over .6dkh a day which was understandable with how few corals I had. Well once I started getting more I setup a doser, jebao DP-4. Got it all calibrated and such and set to 2ml 5 times a day. Ever since then I’ve been monitoring and my alk and it’s been slowly rising and I keep lowering my dosage. I was down to 6ml a day and it was still rising about .15 a day so I dropped to 5ml a day. Why in the world is it so low? Other parameters: salinity 1.0259 (tested a couple days ago), ph 8.2 (tested a month ago an hr after lights out), alk - 10.3 (tested tonight), calc - 455 (stable but tested a week ago), P04 - 0.05 (tested tonight), nitrates ~25ppm (tested a couple days ago), magnesium - 1575 (always been high since I started the tank but stable around there maybe slowly dropping)
Also noted - even though I bled the lines I see small air pockets in the lines which means it’s probably dosing even less then it’s set for)
Also noted - even though I bled the lines I see small air pockets in the lines which means it’s probably dosing even less then it’s set for)