tokesome - i had a look but i cant think of anything different to earlier to do. best of luck mate!
there is many ways of using PK 13-14. i tend to not use the recomended dosages.
i use only canna pk13-14, and i give it at 10% to 75% strength at intevals during flowering. as long as a plant is produving flowers it needs nutes for it so i tend to give it for many weeks, but i never start before the bud tips are bigger than a little finger tip. i think plants can even get damaged from recieving PK too early in flowering. in too high of a dose it can be devastating.
i flush my plants a lot and i dont let any build up get even a posibility to happen, this also helps for keeping feeding the plant flowering nutes for longer time. i flush out about 50% of water or MORE each watering.
i can add i use PANELA - wich is crystalized sugar cane juice. its very pure and not refined in any way at all. its only cane sugar evaporated untill its caramelized and cristalize. its edible and tasty
i give about 5-10 g of panela per 50L of nute water for flowering plants (together with PK 13-14). panela is in big part complex sugars with a lot of vitamines and minerals. it is concentrated sugarcane sap. nothing else.
PANELA is a typical southamerican product. check the link in my sig for info.
i know many organic flowering boosters are made with fermented molasses and
sugarcane...
i think the panela or molasses is AS IMPORTANT as the rigth doses of PK to produce max resin, yield and flavour, without compromise
peace
aquairus got salt in it i wouldnt use it man hehe
panela is cheap good and natural and salt-free
i break the panela chunk wiht a hammer.. hehe yeah man and then i put a piece of about 5-10g in a cup with some water and i boil it for several minutes in the microwave oven untill it is disolved. then i ad that cup to my rez for flowering as simple as that
i almost dont plain water flush at all maybe a few waterings before harvest maybe, but most of the time i dont even think that is necesary.
i work with low EC's and there is not really much to flush out in the end of flowering..
peace man!