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Thank you very much for the help. I think I got it figured out.

I have not been using Cal/mag but I just got some and I'm going to start using it now.Thank you very much Richard Drysift your info is very helpful!

The potting soil I have always had a low ph right from the start. When I first got the soil I did not have the soil pen and did not adjust the soils PH.

Ph pen says 5.2. I do not have a ppm or ec pen. I definitely don't have any bugs. The pics I believe show a cal/mag deficiency in the leaves

I have a bluelab soil ph pen and my plants are yellowing. They seem to be lacking calcium and magnesium

My soil PH is way to low. I'm in week 4 of flower. What's the best way to raise my soil PH substantially? I have PH up and I have been feeding my plants nutes with a PH of 6.8 but it does not seem to be raising my soil PH at all. Any thoughts?

So you are saying that if my soil ph is 5.2 I can raise the ph of my nute rez to 9.0 or something and the plants won't feed on 9.0 they will feed on (somewhere in between) what the soil buffers the nute water too? In my head I just thougt that if the soil was to acidic and locking out nutrition...

I have a soil ph up reader. I just don't know how to go about raising the ph of the soil? Like what should I ph the water to get it to raise?

Yes I'm following the nutes directions. The more I look and think about it. I do believe I have a cal/mag deficiency. I believe my soil is to acidic and locking out calcium and magnesium. Can I add dolomite lime to my res and water with that? How much dolomite lime should I add per gallon of water?

So I shouldn't stop fertilizing I should just get a cal/mag supplement, Is that right?

It's somewhat difficult to get pics of the whole plants because of the trellis. I'm using the trellis so the plants don't get burned by the gavita pro set at 600. 7 of the plants are from dutch passion (Blueberry) and there is 1 (Cheese) and 1 (OG Kush). Organic potting soil with mycorhiza in...

At first I thought this was light burn but the more I start to see it it looks like it's probably nutrient burn. Here are some pics. If it is nute burn should I just flush, flush, flush? Any thoughts?

Thank you all for the responses.

It's just organic potting soil. I added mycogrow from Fungi Perfecti. I can literately see white mycelium running through the soil, it's pretty awesome. I'm currently using Biocanna nutes. The leaf issue is not on all the plants. I grew them from seeds. Maybe genetic.

Okay, I took a few more pics without the hps. I don't know how to change the pic file size. I hope these pics help.

I believe I have a problem with nutrients. I'm not sure if it's an excess or deficiency problem of nutrition and I'm not sure what nutrient I'm lacking or having to much of. I took some pics. Thanks for looking.

Because I want to know where my boundaries are. What I can and cannot do.

Well, I'm not trying to feed the plants with a PH of 10.0 just trying to raise PH chemistry of the soil quickly

If I'm trying to raise my PH should I never adjust over 7.0 in the rez and hope that it slowly raises Or should I raise the PH to 9.0 or 10.0 to give it fast bump into the PH range I want it?

Thanks for the quick reply.The plants themselves look very healthy. I believe the soil ph probe works really great. It does soil and water. https://www.bluelab.com/products/type/pens/soil-ph-pen