Woundering if anyone out the can recomend an Aii in one Dosing system for my 150 gallon tank. I have a Mixed tank and looking for someing that is easy and stable.
Kalkwasser might be a good option. Randy's two part (available through several brands and DIY options) is inexpensive, and there are many higher end options for multi part systems like Triton (had a supply issue and seems to be sorted out now), ATI, Zeovit, and Aquaforest.