Hi, this is my second grow, I’m only doing one plant as I am moving soon and just wanted to lessen the stress. It’s been doing great so far, on about week 4-5 but these spots have all of a sudden popped up on my leaves and the plant is overall starting to droop. I have the light about 2 feet above the plant, growing hydroponically. Using the correct amount of nutrients for the amount of water in the pot, and keeping the ph between 5.5 and 6.5. Any help would be greatly appreciated.
Help! I don’t know what these spots are from
- Thread starter Mmdoug
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- #2
Lower your PH to about 5.6-5.8, you're showing the first signs of a nutrient deficiency. A PH of 6.5 in a hydro grow is too high. Mix your cal-mag, wait 20 minutes, mix your nutes, wait another 15-20 minutes, then PH your water to 5.6-5.8. Do you know what TDS (or EC) of your water is, both before nutes and after?
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- #5
they are hungry. ph is off. possible calmag lack as well.
make sure to fix ph first. ph and feed at a steady 5.8. add calmag if you aren't using it already.
make sure to fix ph first. ph and feed at a steady 5.8. add calmag if you aren't using it already.
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- #7
You don't have to cull the spotted leaves, but they probably won't fully recover, pretty much your call on that. Here's a pretty good chart of where PPM of your water (after nutes) should be.
,
| HYDROPONIC | ||||
|---|---|---|---|---|
| PPM | ||||
| Early Growth | 350 - 400 ppm | |||
| Seedling | 400 - 500 ppm | |||
| Transition | 550 - 650 ppm | |||
| Vegetative Stage | 650 - 750 ppm | |||
| Vegetative Stage | 750 - 800 ppm | |||
| Vegetative Stage | 850 - 900 ppm | |||
| Flowering Stage | 900 - 950 ppm | |||
| Flowering Stage | 950 - 1050 ppm | |||
| Flowering Stage | 1050 - 1100 ppm | |||
| Flowering Stage | 1100 - 1150 ppm |
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