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if you use RO water, then pH is sensitive. but you can create buffer, I use silica. after I add 1/20 spoon of silica for 10 liter of water, I need to add 1.5ml of phosphoric acid. without silica 3 drops (0.3ml) of phosphoric is enough to take my water to pH 6 with the silica and the acid, my...

why do you go so low with the pH? looking at the availability chart, at high acididty most of the phosphorus will become dihydrogen phosphate and will not be available to the plant (at PH 6 almost 95% is already dihydrogen phosphate) and I don't see any increase of the other elements bellow pH...

I grow in IKEA closet (180x50x80cm) 45cm of the bottom is the water reservoir 150W HPS AGRO Superplant general hydroponics flora series (60% of suggested dose) 1 ml / 10 liter sew weed extract every 2 days 3ml / 10 liter humic acid every 2 das last 2 weeks only water (nott even ph down) started...

try bit of higher ph, 6.5-7 for awhile and see if its works better

I grow in small closet need to smoke something, so I figured at least keep the females?

if I start with one auto and one photoperiod the seeds I get I breed again. start with 18h, once flower I mark the auto and keep both male and female auto, then I reduce to 12h. and keep only female photoperiod this way I do not allow crossing of photoperiod and photoperiod how may grow's i...