Well I'm a first time grower and I'm still trying to set up everything for a successful closet grow. It's been a slow process of buying all the goods, but it's almost time to grow. I hope. My ph was pretty high in my soil (sea-green potting soil), and i've heard vinegar was used to lower it. All I could find was apple cider vinegar so I threw it in. Now my ph is at about 6.8, which is good, but dang, that vinegar reaks! It is so strong in my little stealth trash can grow box. Is apple cider vinegar ok to use? Or should i flush the soil out. Guess i should've asked before i put it in . Thanks for the info!