Magnesium, iron and maybe potassium deficiencies.Fourth week, I just flipped them (couldn't wait longer, the ladies were getting way too big for the trellis). I had an issue with the peroxide at first, they were stunt for a week.. :(
~75% of them had this discoloration.
Room temp: Day 78, Night 68.
RH: Day 60, Night, 50.
0811: System's flush @ 6PM. PPM 300, ph 5.9 Top off had 50 L @ 300 ppm (used the leftover water from system's flush)
0812: 730AM. PPM 210, PH 6.1.
0812: Started the flip (36hours of darkness)
0813: 8PM, PPM 190, PH 6.8 (wayyyyyy too high but didn't want to disrupt the darkness) Topoff : 60 L, 870 PPM, PH 5.2
0814: 8AM, PPM 250, PH 6.1, 43 L left in the TO
0814: 8PM, PPM 200, PH 6.4, 35 L left in the TO
0815: 7AM, PPM 210, PH 6.3 , 21 L in the TO
0815: 8PM, PPM 200, PH 6.5, 7 L in the TO, I raised the TO to 60L, PPM 1370, PH 5.2
0816: 630AM, PPM 250, PH 6.3, 46 L in the TO.
Having a TO @ 1370 ppm raises the system's ppm. They drink a good amount of water now so steering the system is easier. I raised the coco cal from 1.5ml to 2ml/gal, seems to help. Only 3 days so...
Maybe you're right @Aqua Man , running low ppm may induced a lockout. I think I will raise the ppm to 350-400 or maybe 500 and see if I get tip burn, trying to avoid that. But what do you see as deficiencies? You were saying several.
@ChikiPox , you were probably right with higher ppm, my ph was raising way too much, probably a too low nutrient's solution and it kept driving the ph up. I'm trying to let the PH varying from 5.5 to 6.5, according to the manufacturer's product and discussions here on the forum.
Thanks to you both :)
I can't go at 500-600 ppm. Tip burn occurs each time I go higher than 450-460.. Running 1000W DE, the plants are way better than few days ago. I'll take some pictures later. I think my next purchase is a ph controller, it's a pain in the ass to put some drops of ph down every 5-10 minutes to avoid root shock.Ok can you get some pics of the whole plant.
Cut the CO2 way down you don't need more than 600 with plants in that shape. What lighting are you running?
Your feed is definitely way to low. When I see the plants and roots I can give ya an estimate but they should not less than 500-600ppm from what I can see and as high as 1000ppm depending.
Your ph is to high drop it down to 5.6-5.8 and let it drift back up to 6.0-6.1 then ph back down.