White Widow Auto (small grow)

If it says hydro only than follow directions theres no turning around from using wtong nutes almost always damage of some sort. Thats not worth loosing precious veg time to a nute burn. So id say no dont try it...thats my opinion

yes you can use hydro nutrients for soil, you would use just a bit less. the nutrients are best for hydro as they are stronger, any nutrient you can use vise versa i believe some companies make them and then put different labels on bottles to get money out of us growers. remember less is more. and your garden looks great

Altho i agree completely with the8thchevron, i think you might want to stay away from the complexity of hydro, i do the same myself.
After a couple years of soil growing it might be a better adventure to explore hydro. When u will take it more as a complex challange instead of being a pain in the S.

Well, use 16.5 liters of water in total, if you are using a flushing additive no point in adding it to the whole water just use it with the last 4 liters of water or even 3 will do it to leave the product on the soil.

But honestly mate... don't flush, where is the evidence that flushing actually does anything but starve the plant? There isn't solid evidence, its all just perceived anecdotal evidence, why will u starve ur plant because others say it does good? Would u jump of a cliff if everyone was full of bandages and telling you, yeah mate, i jumped too, and there was a lepricon with a pot full of gold, trust ME. ... i think i will pass.
Just let em get that last growth, instead of flushing i would recomend using a last stage bloom booster, something like "Big Boom 52/34 PK" get those ladies fat, no diet at the end game mate.

Good luck growmie, wish you the fattest of buds.

Stay liiiiiit.