I'm not a soil grower myself, I prefer DWC, but I would say that if you wanted to lower the PH of your soil then you would need to add water / feed that is of a lower PH than your soil.
What would be helpful, and probably why your other post hasn't been answerer as quick (although you shouldn't expect an answer right away, people may not answer if they are not sure, and there are not many people about at this time, so the person who can help you might be asleep, unless of course you would prefer a lot of 'I don't know' answers or incorrect information) is if you include more details about your situation, for example
Flower or veg (not a soil grower so not sure how much this makes a difference, but more info is better than no info)
What type of soil you are using
What the current PH is from your run off
What nutes you are using, and in what quantities
What strains you are growing ( as I understand it, some strains can be very funny about how much nutes they will prefer)
And whats happening to the plants (leaves curling, going orange with pink spots, breeding with mice) photo's are always helpfull here if you can manage them.
The more information you give the more chance you have of getting a correct response. People don't get paid to give advice, and they don't stay up all night waiting for someone to post a question, sometimes you get an answer within minutes, sometimes you have to wait a few hours, posting comments like 'so no help from anyone' will probably end up having the oposite effect to the one you want, some patience is required, people who can help will answer when they get online.
Also you only need to post in one section, not two!
