@tyke1973 Look at the pic and tell me exactly how you are pulling nutes out of the plant. It is not possible to do so.
If you have a build up of salts then you have over used your fertilizers and should lower the dosages on your next grow.
Once again, you cannot get nutes out of the plant. You can leech the soil if you have a salt build up.
Also lower the nutes towards the end of your grow instead of just using plain water for 3 weeks.
I'll post this again that I did on another flushing thread..
flushing doesn't work the way it's regurgitated on these forums.
1. You cannot remove "artificial fertilizers" from the plant.
2. You can flush (leech) salts that are built up in the soil.
3. Wether you use synthetic or organic...
Flowering above 85f will not hurt the yield. There's a thread on here talking about flowering in higher temps and the correlation with greater thc production. I think it's in the advanced section.
Im gonna agree with dannyboy, it may be a phosphorus deficiency. It can happen during cold weather but from what I read it occurs in sub 50F. Or your strain can be sensitive to temps.
I'd suggest going back to soil. There's something going on in your growing method that's hindering you. Extend your veg to 8 weeks see if things improve or do a grow journal so we can follow along and help