I need some help. I've been having trouble with white build-up on the glass in the refugium for many months (see photo below). It's becoming an issue in the DT. I know it is from the alkalinity portion of the Randy's two part but can't find a dosing strategy that keeps up with demand and doesn't get the white build-up. Here's my current dosing strategy...
- 75mL of alkalinity in the morning
- 150mL of Ca in the evening
- another 75mL of alkalinity before bed
I add the Alk a little at a time over the course of 10 to 20 minutes and all top off water goes through a DIY kalk dispenser. Also, I use baked baking soda for the alkalinity part.