I don't have a clue!

(For one thing, it will depend on ppm in your water...)

You could increase the dose very gradually, then back it off when tip burn starts to show.

a) I would do this on a test plant or 2, not the whole crop

b) Personally, I prefer a more conservative feeding plan. Less problems with buildup in the soil, better taste, etc.

I've found that running hot nutes in soil requires a close eye on soil moisture. As the soil dries out, the unused nutes become much more concentrated.

A safe nute level with moist soil can burn as your soil dries out. Just my experience, YMMV. Hermie :thumbsup: