Ok so I'm starting to increase my sps livestock slowly but surely and I know eventually simple kalk in my ato won't be enough. I'm dabbling in the idea of doing a dosing pump like blob or a calcium reactor. A dosing pump is the cheaper way to go however, this may sound stupid but can someone please tell me what they are using to make their calcium solution, all solution and whatever else is being dosed. Is it expensive? Pros and cons of this. Ultimately I want to make a decision which is more cost effective and also the best way to go....