How big is the tank? I dose 70ml daily on my 105. I finally moved to dosing pumps a few weeks ago, so much better not to have to remember to do it daily. Plus nobody ever understands why "I have" to go home and dose my tank.

Which dosing pumps did you order?

I have not used any 2-part solution other than BRS, but I hear they are pretty cheap compared to others. I also believe you can reduce costs further by using a DIY recipe.