pk 13/ 14 when

hi ,at what stage of your grow ( best results ) do you use PK13 /14 .& is it just one water with it ? what amount to a 10ltr tub of water

cheers nick

From what I read from the manufacturers and some users on various boards, it's best to use it starting from 1 week or 10 days after you go into flowering photo period, just when the first signs of flowers start appearing.

You use it only for about 1 week, so if you are planting in soil, maybe no more than 2 watering with it, and if in hydro then for the period of one reservoir change.

Users advocated using a more diluted dose than the one recommended by the manufacturers, something like 15 ml for your 10 litre res.

Here you go, taken from one of my canna talk mags... I use it myself but they are right about the 7-10 day window - also strain dependant

your just adding a little more PK than what u would with NPK

N= Nitrogen. This is the most important nute for Vegitative growth. It get's the plants green and going strong in the early ages of development. Once in Flowering you need to cut the nitrogen down a lot.


P= Phosphorus. This is important during flowering. It causes your buds to swell up. The amount of P is low during Veg and dramatically increased during flowering.


K= Potassium. Some people like high levels throughout the whole grow. It is supposed to increase your foliage and make your plants fatter and fill in more. Also increased levels during flowering...