LifeOnMars
Member
Hi all. Got an odd one here. I've got 6 Ugorg #1's in 10L canna coco/perlite hempy buckets. Nutrients are canna vega. They were vegged for about 2 months and have been in flower for a week. They've been getting the full strength feed of veg nutes from the canna chart - 2ml/L.
Light is a 450w QB style LED. Temps have been 20-26c, RH has been around 55-60%. I have pretty hard water (8ph, 200 ppm Cac03), so I've been using the hard water version of the canna nutes. Also they were in 1L mini hempys under T5's for the first 6 weeks or so, and they were transplanted into these larger ones and moved into the LED tent about 3 weeks ago.
I noticed these issues about a week ago on three of the plants. The two largest plants are not affected, they are also a darker green. It is an odd issue, like dark brown/purple stripes in between the veins, with the leaf eventually crisping up and dying.
I defoliated quite hard pre-flower, before this occurred, I'd be surprised if that's what caused it though. The feed before this happened I did add too much PH down, and had to add PH up to compensate, quite a bit of it, so I had assumed that's what had caused this, but they've had a flush and a couple of feeds since then and I'm still seeing the issue popping up on these three plants.
Looks like a PH issue, I know, but I've checked the PH of the runoff, flushed and refed with freshly PH'd water/nutes, but it's still popping up. I've also checked my PH pen calibration, it seems to be fine.
I am letting the pots dry out a fair bit between watering's. The plants aren't full on wilting, but they're very light when I water. I doubt that is anything to do with it, but I do wonder if this is a reaction to the 'res' being empty for a day or so before refeeding. It doesn't make sense why the larger plants aren't affected though.
Any help is hugely appreciated.
Light is a 450w QB style LED. Temps have been 20-26c, RH has been around 55-60%. I have pretty hard water (8ph, 200 ppm Cac03), so I've been using the hard water version of the canna nutes. Also they were in 1L mini hempys under T5's for the first 6 weeks or so, and they were transplanted into these larger ones and moved into the LED tent about 3 weeks ago.
I noticed these issues about a week ago on three of the plants. The two largest plants are not affected, they are also a darker green. It is an odd issue, like dark brown/purple stripes in between the veins, with the leaf eventually crisping up and dying.
I defoliated quite hard pre-flower, before this occurred, I'd be surprised if that's what caused it though. The feed before this happened I did add too much PH down, and had to add PH up to compensate, quite a bit of it, so I had assumed that's what had caused this, but they've had a flush and a couple of feeds since then and I'm still seeing the issue popping up on these three plants.
Looks like a PH issue, I know, but I've checked the PH of the runoff, flushed and refed with freshly PH'd water/nutes, but it's still popping up. I've also checked my PH pen calibration, it seems to be fine.
I am letting the pots dry out a fair bit between watering's. The plants aren't full on wilting, but they're very light when I water. I doubt that is anything to do with it, but I do wonder if this is a reaction to the 'res' being empty for a day or so before refeeding. It doesn't make sense why the larger plants aren't affected though.
Any help is hugely appreciated.
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