That's the same dilution I burned my plants with... I now use between 1/2 and 1 ounce of PureCrop1 to one gallon of water.
I've not seen nare spidermite or mold since I've started using this stuff, and the buds I've smoked so far, seem very good, although they were a little early, but very smooth and clean, so far.
I think what happens is you need to keep the mixture shaken though out the process, it' disperses, but if it's left sitting awhile, it will congregate in layers, creating
micelles, leaving more of the purecrop in the bottom (floats to top) of the spay bottle, and the last will be more foamy and concentrated, than the rest....
Personally, I've switched to using a bit of
coco glucoside surfactant and
pure glycerin, then add in any traces of anything else I'm wanting in the mixture, like nutrients, during early flower.
Dipotassium phosphate, or
potassium bicarbonate, or some acid treatments, of
salicylic acid, or
ascorbic acid, during early flowering. Which are effective against the mites, but I always pH adjust back to 7.5-8 with the
Potassium Bicarb. To keep any fungi in check.
Thought about try adding some sulfur, but it would need a something to balance it correctly.
I've been blasting my roots with lot's of concentrated humics/fluvics lately, toward the end, hoping that might produce some interesting results during late flowering.