What are you adding to your tank?

[Ryan-b]

I have been using the Marine magic doser (3 heads) for 6 months now and it works great, absolutely no problems with it yet. It can dose up to 16 different times a day per pump, and each pump has 4 different speeds. I think i paid 160 shipped from china or where ever it comes from.

The only draw back I have noticed is if the power goes out you have to reset the clock. It keeps all your scheduled dosing times/speed/length stored though.