PhoenixFlower said:

The stuff I'm using right now, the OMRI granules from PROMIX dissolve almost instantly once I whisk them into the water I use.

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PhoenixFlower said:

I'm going to attach my water report, I'm seeing no mention of magnesium anywhere within it.

About a week or two ago, I went out and purchased some Calimagic from the hydro shop. Watered in 1tsp with a gallon of water and waited, I noticed today that the problem doesn't seem to be getting better, it seems to be spreading further up the leaf. Only on one stalk though, I'll upload pics for that as well. The rest of the plant seems to be unaffected by this issue.

I'm using PROMIX regular bag soil from the hardware store with Walmart nutrients, granular organic nutrients, I JUST fertilized for the 2nd time this grow, the last being when I transplanted at the beginning of veg (I'm one week+ flipped to flower), I also watered in 1tbsp. of epsom salts into my mediums because I observed what appeared to be a sulphur deficiency. haven't been watering a lot, I've been trying to let my roots stretch out as much as possible for the upcoming flower. I plan to water my plants every three days or so from here on out now that I've fertilized and am in flower.

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Buzzzz said:

Promix will have gypsum in it and so will your tap water(calcium ) , I've used it for years and years and never supplemented calcium. Coco,ro, or purified water it may need it

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ET12SECOND said:

Do yourself a favor and try a run with the standard promix I listed. It has zero nuiets added so what the plant gets you give it. Not much guessing. I run a time release dry fert (american pride) soooooo much easier. The promix is a great product but it needs a good cal shot fairly often so I feed with calmag plus. It is by far the easiest method I have found. The only other thing is I add the budswell during flower and a little bonemeal for nitrogen hungry strains. This really works well

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PhoenixFlower said:

This is why I think it's a pH issue, there definitely is calcium in that medium, no denying that.

I really need to invest in one of those BluLab pens.. If I was to go out and buy some of that there fast acting sulfur, how much do you think would need to be put into the 5gallon grow bag to bring the pH down by one or one-and-a-half?

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Buzzzz said:

I think PH is blamed too much when watering practices haven't been mastered. I use rain water for indoor in promix and haven't checked ph in years. Plants will adjust to ph as long as it isn't all over the place and remains more or less constant unless it's extreme. . I grow in clay where I live and only add a bit promix to the hole to give them a bit of help and once established they seem to figure it out. Just my1/2 cents worth

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ET12SECOND said:

i have tried tons of ways. If I stay at a single ph reading I have issues. If I range from 5.9-6.5 I get the best results. but it my be my water supply is different but I have don it this way for many years. My home water ph is at 8-8.5 But Isay do whatt works for you :) I love my general purpose pro mix ! So cheap i just use new after every grow

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