Thanks @Lil Dab . I edited my post because I do mix it for foliar with Full Up as well, just not every time...Shouldn't be a problem. I use 1/32-1/16 tsp per gallon for foliar, and 1/8-1/4 per gallon for the watering can. I use it alone for foliar Edit: (actually,I do mix it with Full Up for foliar as well), but mix it with just about anything(Silica free) when used for watering.