R
rolandrog
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- 18
Like someone suggested, I would raise the pH of the feed water to 6.8. Measure the reading of the run-off pH and ppm. If the ppm is under 1,500 ppm, it is ok (2000 ppm is high limit). Normal nutrient feed should be less than 1,000 ppm. My routine feed ppm is around 400-800 ppm, including supplements and tap water.Hi this is my first post here and I'll try to be as thorough as possible because I'm unsure of what the problem may be. These 2 photo plants are the same age, different strains. They each have a 3 gallon fabric pot that I feed once a week with 1 gallon of fertilized pH balanced water. The composition is Fox Farm nutrients of 2 tsp Tiger Bloom, 2 tsp Liquid Plant Bloom, balanced to roughly pH 6. They've gotten this feed composition for about 1 month since February 12th. Feeding is incremental, I don't dump half a gallon in the pot and hope. Light schedule is 12/12 and similarly started February 12th. No signs of bugs of any kind that I can see. Temperatures fluctuate from roughly 69-72F during the day with a humidity level of 45-50% and drop to 60-64F with a humidity level of 55-60% during the night.
The leaves on one plant have almost all shown signs of yellowing around the edges with either purplish-red and/or brown burnt tips. Very few have developed tiny brown specs near the tips. See below.
View attachment 1226618
The other plant hasn't shown any of these indicators until this week, which is what brings me here. Clearly I must be doing something wrong if both are exhibiting the same signs. What could this mean? How can I avoid and remedy the problem? Any help is greatly appreciated! Thank you!
View attachment 1226620
At pH=6, Calcium, Magnesium, and Phosphorus are not readily absorbed from the soil.