I'm I missing something here?
I've been using RC from the beginning, 2 yrs, using R/O, making 40-50 gal batches, using most of 1 bag to mix. Are, or did you buy pails? Did you re-mix the salt after bringing it home? I don't like using pails, it's much easier for solids to separate, where heavier solids would go to the bottom, whereas lighter ones would go to the top.
I mix at 75 degrees, and don't have any of these problems. I usually wait about an hour before the WC. I don't use a pump to mix, just a piece of wood molding, stir by hand. I like the bags, easier to handle, but I still toss it around prior to opening.
I can't believe your getting hair algae from the salt, that doesn't make any sense to me.
I'm I totally wrong? I would rather spend money on livestock.