My plants were doing great up until about 2 weeks ago. This is a first time grow with little no guidence except the internet. 30 days into flowering, it looks 4 of my plants are yellowing and fading hard, clawing leaves and nute burnt tips. I dont think i transition fed them right from veg to flower nutes. Bud growth doesnt seem impacted, but after checking the ppms they were pretty high. 1800 - 2000 between all of them. I am using tap water with a ppm reading of 450. My solution as an immediate fix was to water them down to around 900-1000 ppm. It seems as if the extreme yellowing has slowed down or stopped, but the clawing remains. I had planned to water down again once dry to around 500 ppm with a ph'd water and mammoth p solution. And then re - introduce flowering nutes (fox farm) for one last feed before they need flushed before harvest. Any confirmation on this idea or other ideas are helpful!
top of page
.png)
bottom of page
Thanks for the replies everyone. Huge help!
Glad to hear you flushed since the runoff PPM was so high. Sounds like potential salt buildup caused a lockout. I personally do 5.8 pH going in and ignore runoff pH when growing in coco. That's just what has worked best for me. Others do other pH levels; 5.5-6.5 is the general range for coco but I've never had good luck going outside of 5.7-6.2
For your soil plants, if you continue to pH your nutrient solution to 6.5-6.8 then give to the plants, your runoff pH should gradually increase.
Vacuuming up the runoff (10-20%) every time you water/feed should definitely help reduce the amount of salt that builds up for the remainder of the grow. Your buds do look very nice though and I do believe your plants will recover from this. Hope this helps.
For the Coco 6.3 is ideal for maximum potassium and phosphorus, but still watch early in flower for any deficiency of nutrients that don't uptake as well at that ph. When I flip to flower I usually increase phosphorus and run 5.9-6.2, and then 6.3-6.5 in the second half of flower with additional potassium.
Yes I should have included in the beginning. haha. ph for coco (the most yellow and clawed plant) was 6.3 or so i thought for beginning of flower. I realized ph pen was off and corrected. so unsure of the actual ph. the ppms were high, 2000 ish for some soil plants and 1900 to 2000 for coco plants. I did not water to run off because of scrog and inability to drain water at first. since then (thanks mr grow it) started using wet vac. The steps i have taken so far were to remove the most yellow and damaged leaves. Followed by watering with correctly phd water at 6.3 for coco and 6.8 for soil. Watered until ppms dropped to below 1100. didn't want to remove all the nutes at once. tomorrow the soil will be ready for the next step. Which is what im looking to get help with. I have the fox farm trio, and mammoth p at my disposal. quick edit: run off ph of coco is completely normal as what goes in, however run off soil is usually 1 whole number lower coming out, hasnt been issue since start of grow so ignored. Most soil plants seem happy except excess nitrogen (probably from soil - heavily ammended pro mix)
There are some lower leaves on another soil plant starting to yellow pretty bad with some clawing up top. I should specify (im a noob), I transitioned to flower with both veg and flower nutes, and forgot to do any sort of flush inbetween.
I must say bud development seems ok for now.
A little more info and pics will help tremendously including run off ppm/ph, what medium are you using, and we can start there.
Pics would help. What is the soil runoff ph? What are you growing in? How often do you water?