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Week 1. Sprouted after 3 days in pot. Setup as explained above BUT 660 Watt bulb is dimmable and ALWAYS on at 250 Watt, in a 60 x 60 x 1.40 Tent, 2ft by 2ft x 4ft, 18 Hrs light from seed as it's an Auto. MAC-Flurry from Grizzly Seeds, M.A.C & Wedding Cake mixed are the genetics. No nutrients added at start only PH'd water till week 2. Substrate washed through with nutrients before planting though with, CalMag-pro & Canna coco coir A/B, *VERY LIGHTLY*. Minimal PPM. Left to grow freely no grow techniques.
Giving the plant to much nutrients, Canna Coco A+B says 40ml per 10 Litres of water = 4ml per litre of water each one (8ml all told) which I find is overkill on PPM. Between week 4 - 6 maybe even up to 2000 PPM, it got to as I found out exactly how to use my TDS/EC PPM meter, that week.. Small signs of nutrient burn on tips of leaves. I started on week 6 doing 15ml and even that is high on PPM. Settled on 10ml each of Canna Coco A+B per 5 litre of water so 2ml each one, per litre of water plus 1ml of Cal-Mag Pro per litre. Basically halved what the Canna Coco manufacturers recommend.
Flushed one week. One to go till cut n dry. The 300 PPM is that I use White vinegar to lower my PH and it is around 250-300 PPM, plus water isn't 0 PPM, Normally mines around 50 - 80 PPM. Plants basically flushed just need to go on another 5 days-ish before cutting.
It grew every step of the way to 70 days no hassle whatsoever. It says 600 watts used it was only on 250W for 18hrs per day from sprout (dimmable ballast). 2ftx2ftx4ft tall tent. 1lb 6oz .15. It withstood fluctuations in temperature and ph (ph very slightly between 5.9 and 6.5 ph). Temp varied wildly at times even up to 40C. A very hardy mix of some great strains.
@Grow3rPT, I quite like this pairing of MAC + Wedding Cake. It only smells (heavy) if you either spray it with water or you actually touch the buds (do that guaranteed sticky hands and stinky). It has a gorgeous earthy smell but with a massive hint of sweetness that you cannot quite put your finger on which sweet it smells like I go with Candy Floss -ish.