To answer your question, i am not a pro by any means , jst a rookie, but i have used a few drops of lemon juice to lower my ph and thats plants seemed to not be affected badly by it.A couple drops in 4 litres of water lowered my ph .5 so you just have to experiment, hope this helps
pokherking Reviewed by pokherking on . third growing attempt w pics, need advice this is my third attempt at growing and i think that i am off to a decent start. i finally got all the required equipment to grow. i am currently growing 6 plants ( 4 blue mystic an 2 auto-bang) under a 400 watt hps. they are about 3 weeks old and have been getting lite nutes for about a week and a half. i am using the fox farm grow big veg fert and it seems to be working well. i decided to LST all of the blue mystic in hopes of getting a better harvest. i am currently having a problem with my Rating: 5