Zinc or iron just a guess. Both trace minerals. Iron can be locked out at high pH. Dunno about zinc. Do you have pH tester for runoff? Can you fill out the ILGM support ticket
Need to know a few things. Need to make sure your runoff ph is within range before we can start pinpointing. What ypenof medium are you growing in? What type of water? Lights?
Happy frog tap water adjusted to 6.8 run off 6.6
Unit farm leds
Looked great before I turned her gdp strain
Looks to be a magnesium deficiency, 1/2 teaspoon of epsom salt added with your nutrients or per 1 gallon of water, could be lacking in some sulfur as well and the epsom will take care of both
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Have not given any nutes used fox farm on last grow followed directions and and almost killed my plants
What week above ground is the plant? The FFHF will feed for approximately 4 weeks, did you check the run off PPms ![]()
Going on 9 weeks don’t have tds mete
Yeah I she’s hungry. What nutrient line do you have and without checking the input nutrient PPMs and run off, it’s kind of a crap shoot Grow Bro ![]()
Can you recommend nutes that can’t hurt the plant like I said I used ff on last grow and it basically ruined my plant I used by the directions 2 teaspoons per gallon every other watering big bud
Get yourself a TDS meter (these aren’t expensive, but crucial). You can mix the ratios suggested on the packaging then add water till you dilute your feed to the desired strength. Also I believe Fox Farms requires all three of the trio for a fully balanced feed. ![]()
If you’re looking for a new nutrient line Jack’s 321
The FF Trio isn’t going to kill your plant. FF nutes are very salty, but a lot of growers have success with it. I used it the first 2 years I grew indoors.
Were you feeding Grow Big, Big Bloom, Tiger Bloom, and cal/mag? You need all 4. Big Bloom only contains micronutrients (copper, boron, iron, etc.) The plant also needs nitrogen, potassium, and phosphorous. Big Bloom contains very little of these. I expect your runoff PPM is very low and that is the problem.
Jacks 321 is a great fertilizer product. It’s effective, inexpensive, easy to use, and isn’t as salty as many fertilizer products.

