week 6, what dosage to use?

full strength doses?

Depend on how long you think these are going to flower. If its a 9 week plus strain, then I would go full strength for another week. I have a DWC tub going with 2 blueberry skunks and a white rhino (9 week harvest), they just hit 6 weeks today. I'm going to drain the tub tonight and go with full strength for one more week. Next week I'm flushing again and I'll run them to harvest on organic nutes at about half strength.

5ml per gal never did me wrong...