How to adjust soil PH late in grow?

Hi. I've looked around and see various advice about amending soil to adjust soil PH. It may be not worth worrying about this late in the game, but I have a plant, indoors in 5 gal bucket, roughly 3-4 weeks from finish. She is fairly large and root bound. I can't amend the soil at this point. I used my cheap PH probe tonight and the soil is just outside the normal range on the alkaline side.

Any ideas how to drop the PH in the container? Will adjusting the water I use help? She spent most her life outside and got lots of rainwater. Since I brought her indoors I've been giving her RO water. What PH would you recommend the water I use be at? I haven't used tap water on it so I don't think there's a bunch of dissolved solids/salts in the soil.

Maybe since it's almost done I should leave it alone?

Thanks for your suggestions!

You probably need a little cal/mag. Its very rare that the soil gets too basic since most nutrients and waterings are given at slightly acidic pHs

Lemon juice is supposed to work but im not sure how much. Id just ph to about 6.5 is the medium is too basic.

Thanks! So is cal/mag a product? And/Or do you mean I need to add calcium and magnesium to my soil? How do I do that without digging up the plant and transplanting it?

yeah cal mag is a product made by a couple different people. ive heard the brand cali magic is really good but havent tried it myself.

You just mix it in with your water or nute mixture.

budbro18 said:

yeah cal mag is a product made by a couple different people. ive heard the brand cali magic is really good but havent tried it myself.

You just mix it in with your water or nute mixture.

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Thanks a lot! I'll check that out.

hi i just wanted to no i have 5 plants that have gone to head now i have never grown in soil indoors atm i feed 500ml per week now how often can i feed them it is well drained soil i dont wanna over water but i do have 8 others in coco i feed 3 times a day any1 can help ??

rob333 said:

hi i just wanted to no i have 5 plants that have gone to head now i have never grown in soil indoors atm i feed 500ml per week now how often can i feed them it is well drained soil i dont wanna over water but i do have 8 others in coco i feed 3 times a day any1 can help ??

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wow! that was totally random! what does gone to head mean? 500ml of what? wish i could help. think you're on the wrong thread dude.

all good man