I'm using a mix of super thrive, and fox farms big bloom and grow big. Is it okay to use left over water/nutrient solution for the next watering or the one after that, or should nutrient's be mixed up freshly for each watering? I've been giving them nutes for two weeks now so I've just been making fresh mixtures but I was wondering if it was okay for it to sit.

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GUERILLA MAN!!!

I don't like the idea of anything sitting, I would just go out and buy a water pump from home depot or any other harware store they're under $20 and they will keep your solutions in motion so there's much less concern with bugs or bacteria.

I like to keep a tub of water around that i have adjusted the ph to 6.5 in and then i use a 5 gallon bucket that i have marked at the 123&4 gallon to mix my nutes, that way i don't have to mess with ph al the time and i can mix nute batches as small as 1 gallon so i waste as little as possible.

Good Luck
P@ssw0rd

I would definitely mix up a fresh batch everytime you water, just to make sure bacteria doesn't ruin your crop