Ph

i do. i use a small bottle from supermarket to get ph from near 8 to 6.1-6.3. It works but is not longtime stable, which is no problem here. My Soil has something under 6, so it balances itself out. My Drain has a ph of 5.8.

It does work but would get really expensive unless you have a lemon tree or bottled lemon juice or something. I need to add cal mag to my water, and found that it does the job of ph ing my water perfectly from about 7.5-8 down to 6.5. I bought a ph adjuster an rarely use it now. That stuff a very tiny amount goes a long way. I believe its phosphoric acid.

you can. it adds in a few other things then just a PH down. like sugars, esitonal oils and lemon scent, Its not a super strong acid but it can work. Some main brands PH down is a mix of citric and phsporic acids.