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Thanks. Why pH 5.8? I haven't used an TDS/EC meter.

I ran into a Cal-Mag deficiency due to an excess in Potassium. In trying to circumvent the problem with the Calcium deficiency, I tried Foliar spraying the leaves with Cal-Mag in attempt to deliver the calcium via the leaves but, had no luck whatsoever. Does anyone know the correct procedure...

You guys are very observant.

I did have a P def couple of days ago because I stopped feeding the plant. Fed 1/8 tsp of Phosphorus 9-61-00 and it appears to have resolved that deficiency.

I had deleted the affected leaves from a couple of days ago. I have not seen the problem reappear. Maybe the 3-in-1 spray worked. If the problem resurfaces, I'll do as you suggested. Thanks. Regarding the nitrogen excess comments, it does not appear to me as excessive as some commenters...

Thank you, appreciate the comments.

I am at a loss. Checked leaves, no insects. I tried a 3-in-1 spray by Safer which works on insects, mites, and fungus. I removed all of the damaged leaves (only 4) and sprayed the top of the leaves. I checked top & underside of the leaves, and noted damage just on the tops. Will check...

Some photos of a Skywalker OG, week 7, day 3 of flower. This plant has been mostly problem free until I spotted something on just a few leaves. Don't know if fungus or insect. Any help would be appreciated. Thank you,. Here is a close-up of one of the leaves:

fyi, the issue has not advanced beyond what was shown in the photos. So, HRR was correct in his diagnosis of the deficiency. :grin::leaf:

Right, and it seems the remedy only requires a small amount of Potassium to resolve the issue. I'll check the plant at lights on to see if there is any more damage. I use a magic marker to mark the affected leaves so I can tell if the problem has been fixed.

This is an organic grow and the strain is Kosher Kush. The leaves have been this color for several weeks. I haven't observed any signs this plant has been over fertilized. The dark green leaves are a characteristic of this strain. I am using Dr Earth dry feed schedule. I think that Dr...

I was thinking same, but usually see it on the bottom of the plant vs the top. I have some pure potassium (0-0-50) which should correct this deficiency overnight. Appreciate your input.

I am growing in soil (10 gallon pots) and a couple of days from end of week 5 flower. A few of the small leaves on top are showing light green on the edges (first observed yesterday, spotted more today). Not sure what the plant is trying to tell me. Other than that, the plant has been mostly...

I was thinking about combining soil and dry amendments, adding Bokashi to digest or break down the dry nutrients before planting. Then, shouldn't nutrients be more available for uptake?

I have read that top dressing Bokashi onto your soil is recommended because it increases the microbial activity in the soil. If Bokashi is used to top dress, is it necessary to add microbes to your soil or does Bokashi supply all of the microbes we need? Are there any guidelines when...

Maybe you have come across a problem I've been having for awhile now. Have you grown strains where trichomes do not become cloudy and the weed is non-pychoactive?

From Royal Queen Seeds: Cannabis seedlings get all their nutrients from their seed, and absorb water via their leaves as their root system develops (that’s why it’s important to keep them in a warm, humid environment). You won’t need to start feeding your seedlings until they’re about 3–4 weeks...

I talked to Build-a-soil today and decided to use Build-a-bloom once per week, top dress with Build-a-flower, and use Big 6 for the micronutrients. For those not familiar with Build-a-flower, it contains 3 Types of Compost + Added Minerals. Top dress handfuls across soil surface before/during...

Okay, sounds good. As I said earlier, these plants are small and do not have as much greenery as I would like, so I rather not wait for the plant to tell me when to add nutes because deficiencies can cause a lot of damage quickly before they are resolved. On the other hand, I do not want to...

I repotted near end of week 3 of flower So the Frog soil is just a few days old. In the BAS example you give, I Assume they are using the same soil as they transition to flower. In that respect, it makes sense that dude is adding some nutrients at this point.