I agree with what she is saying. Kind of what i was getting at so your at week 5 make a 1/2 strength mix of Nuts. and water/feed say on the Monday. when your plant is drying out, mine @ week 5 of flower are to the every 2nd/3rd day for the remainder of the week so for me thats two more waterings at this time they only get PH 6.0-6.5 filtered water only.
If you are going to water/feed @ every time they need water you need to stay down around 1/4 strenth Nuts. or your going to have problems with lockout.
I just started new round of a strain that i personally have never done purpleberry Kush dude calls it (Purple Kush x Blackberry Kush) and have no Nuts. experience as i do not care for the mother. But went from rooted clone into 3gal bags with Happy frog so all they got was PH balanced water w/ rhizotonic root enhancer for 2 weeks and fed off of soil @ week 3 they got 1/4 strength Nuts. with rooting enhancer @ week 4 they still got 1/4 strength Nuts. with root enhancer (this time was one feeding/watering taking 10 days for soil to require water.)Things ran up to 20" with thick stalk and root system @ week 4 they were flipped and give 1/2 strength transition mix (no burn, no lock ) @ week 5 just gave them 1/2 strength bloom mix. So basically what im getting at is experiment with your Nuts. and find what they like, with MJ less is more and would always start at half strength an make a move up or down in potency. Keep journals on strains and if you have a couple that you regularly do and for the most part they become like clockwork.