Well i can tell you that just a few drops are needed to correct a PH level of 7.5 to a PH level of 6.8 of 5 gallon bottles i get of RO water....vinegar is some potent stuff when it comes to using it as PH down....i do it by drops at a time...hope this helps
SeedlessOne Reviewed by SeedlessOne on . useing vinagar someone said use vinagar to lower ph how much per litre? im growing in coco/perlite/claypebble mix ph 7.5 how restrictive to growth is this? Ive been useing 3ml per litre canna coco A + B, 500ml per plant. they are 4weeks old 10" x 10" and just put to 12/12 under 600HPS. All advice greatly appreciated:thumbsup: Rating: 5