OG Kush & Gorilla Zkittlez

20/4 is max. I do that in my autoflower room. The equipment needs a break. Plus plants need some rest. I run mine over night to battle cooler temps from outside.

probably not, but it might change proportions of varying quality of buds. you may get less yield but more quality buds and less larfy stuff. Auto is on a timer, so anything cut off (like something facing/toucing dirt after lst) was wasted time for the plant that it'll never get back. or more easily understood as resources expended that result in nothing and no ability to add vege time to make up for that loss. i don't believe anyone has properly assessed this... and there's way too many variables involved to trust anecdotes of tiny samples and drastically different set of variables in any one context that make an apples to apples comparison impossible.

FFOF soil is a hot soil and can burn some autos. If you wanted to you could top dress with it to add in more nutrition to the plants. One thing about autos is they dislike strong feeds and can be really picky when there rootzone is not ideal. If you plan on feeding them with some extra nutrition I would suggest following a plan with structured EC levels to follow to avoid triggering the plant. I like this site a lot for a basic guide and simple to follow chart. Its not perfect and not set in stone but should help you out a bit. https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/ Soil based grows also hold onto the nutrition more then a soilless grow. So less is really more in this case. Take it slow and let the plant tell you when its good. This is all assuming you will be feeding a liquid fertilizer vs dry amendments. If they are amendments I'd mix them into the top soil at 1/2-1/3 recommended strength and with some extra bacteria/myco. Good Luck!

If you're only feeding them straight tap water, I wouldn't be concerned at all. If, as m0use rightly suggests, the pH is consistently falling, it USUALLY means the EC is too high and you'd need to back off on your nutrients... but if you're not giving them any nutes, there's nothing to back off from! If you're still feeding them (and why wouldn't you be?) the trio, I would suggest backing off the Grow by half... plants, in flower, don't need as much nitrogen as the Grow is giving them and this may be leading to a lockout of other nutes which your runoff pH is trying to tell you. But for me, if the plants are looking healthy (and they are), there's nothing to worry about... Good luck!

Simple. Let them dry out under natural light in a room where sun light comes in Make sure they well a truly flushed. Or you could leave them under lights on timers say 12 hrs a and make sure they truly soaked.. this should finish them off. Turn your light down by 50..as you'll be in the ripening stage. If they 7 days out, or 3 just set your timer accordingly. Some ppl might not like the thought of electricity on. But, in a daylight room should help dry them out. Doing the same thing in the tent with less affect and i have even fully let my plants dry out and harvest by just pulling from the soil roots and all. And it makes for the best tasting weed. Once you have any Synthetic nutrients out of that pot. So hard flush and one of those methods should work. Good luck.