Automatic Dosing Pumps

[twychopen]

I have been thinking about getting ADPs. Has anyone used the Bulk Reef Supply's ADP? Also, Is there any reason to get more than 2? I would automatically be dosing Calcium and Soda Ash then when I am done dosing 1 gallon of each I will dose 20oz of Magnesium so I won't need an automatic doser for that. Correct?

[Daniel]

Marlin uses them. He also has 2.5 gallon tanks as resevoirs. Its a nice set up. If I felt like blowing 160 bucks I'd get them. For now the manual method works for me. You are correct about the magnesium.