Use distilled white vinegar to lower ph in an emergency--apparently it doesn't take much to adjust it so use small amounts at a time. If it gets too low you can use baking soda (again-small amounts) to raise it. I have only done this in a pinch but it works. I wouldn't make a habit out of using them but maybe others do and its fine.....
Weedhound Reviewed by Weedhound on . Need help ASAP!!! Hey everyone well im growing in a dwc hydro kit and my plants were doing jsut great and i made the biggest mistake ever i forgot to order more ph down before i ran out so now im waiting on ups to deliver it but my plants have a ph of 8 right now and there developing brown spots on the leaves so is there anything i can do or is it pretty much just hope ups hurries?:confused: Rating: 5