sodium bicarb users (2-part)

[christyf5]

For those of you that use sodium bicarbonate (baking soda) as part of your "DIY" 2 part solutions...how the heck do you keep this stuff in solution? Mine seems to come out of solution (not precipitate, just doesn't dissolve). I'm using the recommended 2 1/4 cups or whatever it is per gallon. Am I doing something wrong? Does the water need to be warm to mix it in? I'm getting about an inch of slurry on the bottom of my 1gal milk jugs.

Previously I was baking the baking soda but it was preciptating in my tank. At least with the unbaked stuff I don't end up with a mountain of it in my sump.