how do i correct this
i use this and ph to 6.3, i got cheap soil that has ph 7 out of the bag, cant seem to get it down
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Is that a run off or slurry soil test? What medium are you using? @MidwestGuy guy is a great soil cultivator and can help getting that stable around 6.5. What does the over all plant look like. Pics?
Which soil?
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You are going to have a hard time managing pH in a soil that is not buffered for it. Adding dolomite lime can help stabilize pH.
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i thought lime raised ph?
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Not at 7 or above. Lime is used to stabilize pH. Most growers will eventually have the opposite problem (too low pH) as salts build up. How long till harvest?
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What are the run off PPMS? As @MidwestGuy stated salt build up from unused nutrients and not feeding or watering to run off can prevent certain Mobil and immobile nutrient absorption for info on future grows. They look good and may be nearing the end where the natural cycle of the lower leafs dying are part of the process 
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ppms were 786
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Not bad Growmie! You’re super close to finishing and I water feed only my last 2 weeks to get those down and basically a water rinse. Can you post some Trichome shots, just from observation i would say you’re in the window but would rather see those up close Trichomes and pics of the calyxes not the leaves
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shes only been flowering about 50 days
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So going into week 8, do you have a way to view the Trichomes like a magnifying glass or jeweler loop?
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I always monkey around with my soil. Right now I’m reusing old soil mixed with, well, the kitchen sink. LOL
Anyways, the point is most of my mixes have had a lot of peat moss added. I would mix like 2 parts that potting soil with 1 part peat and a couple of cups of perlite. I add stuff like potash, compost and bone meal. The peat (and potash) will drop the Ph but peat also holds a lot of moisture.
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Distilled water wont hold its own ph. You will need to add calmag or ive used epsom salts to up the tds to 200-250 ppm, some even use half distilled half filtered water. Without any dissolved solids the ph of water is unstable. If you pour ph UNstable liquid into a medium (your soil) the liquid will take on the PH of that medium. If you pour PH stable liquid into a medium, the medium will then be adjusted by the ph of the liquid, up or down depending.
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