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LST has been started. Vermiculite in soil mix makes water more alkaline. I have to oxidise nutrient solution to 4.85-5.00 ph before watering. So I get 6.0-6.5 ph on the way out and leaves seems much better now.
Hi @Akvinsky ,seems to me to be a magnesium deficiency.i've been looking at your diary and even at the lowest part of the plant far away from the led are leaves with dry tips and curls upwards, this is a lack of mg.If there is an accumulation of mineral salts in the roots of your plants, you can calmag or epsom salt every day that it will not be able to feed on the calcium and magnesium you give it. you have to make a flush 3x of water the liters of the pot and apply a good corrective dose of calmag. if the problem persists you will have to apply a soil cleaning solution (florakleen or ata clean per example) and then apply calmag or epsom salt. good luck mate 👍🙏💪
Setup:
Soil+vermiculite (5:2)
Temperature in box is about 84F. Near the led 60w is about 90F
Ph in - 4.5-5.0. Out - 6.0-6.5
(because of vermiculite?).
Ppm in - 140 (only water last few days) . Out - 1500
On vegetative stage there was no problems with the same ph and ppm plevel.
4.5 is to low and if it comes out at 6.5 there is a ph problem for sure. PH in the soil is way to high. Flush with a good amount of 6.0 ph water. When the soil drys out water with a ppm of 800. Try and keep water at 6.0, that's the magic number.
Unfortunately all my efforts to help her were useless. Flushing did not help. Ph was 6.0. I really don’t know how to save her. She keeps yellowing and drying up. So I decided to let her show her best in that conditions and then maybe start the new grow. Hope she will live next 4 weeks at least. Anyway buds are getting bigger and that’s good.
@Akvinsky, El suelo no es el problema.
Primero usted debe preparar la fórmula de los nutrientes que usará, disolver en agua y después medir el pH (con la mezcla ya preparada) antes de aplicar al riego.
Te aseguro que te irá mejor la proxima vez, bro. Ánimo.
@RdSkM, Sadly but I have no any special nutrients to fix a lack of magnesium. And at least next 3 weeks all special stores will be closed. I tried flushed the soil with Ph 6.0 and did not get any result. But one thing I've learned. I don't want to have anything to do with a soil anymore)
What light are you using? I'm thinking of doing a pc grow myself. Seems fun and would love to train them out but not sure of a light that could get close enough without burning them.
@Visions, I’m using 60w led board with Samsung 301b white leds and red Osram Oslon leds. Based on the experience of micro grow reports I’ve seen, I would say 60w-75w is enough. You can build your own light using cob leds for example and it can be even more powerful if you will use a dimmer. My box heigh is about 22 inch, so I suppose 60w is enough
Akvinsky
