I've been growing autos in Foxfarm Ocean Forest soil for about a year and a half. If you're using soil that is already filled with nutrients (and even if your not) autos barely need any food. They will burn SUPER easy. I've had grows where I never went over 1/4 strength the entire grow. Certain strains can handle half strength towards the middle of flower but alot of them do great w only 1/4 strength. Otherwise you're gonna burn the piss out of your plants. I would say unless you're using plain soil with nothing in it, keep your nutrient strength at 1/4 strength unless you see the start of deficiencies then you can up the dose.
Also.... autos do NOT do well with overwatering or any other kind of stress. Every time you stress them out, your affecting the overall quality and harvest. With autos you just gotta keep it simple
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