I would think ascorbic acid vitamin C is pretty cheap. I got my bottle of vit c in powder form at Trader Joe's. Cheaper than vinegar. I tried ascorbic acid and got particulate matter precipitating out. I was using organic nutes (my own design). Now, I'm using GH lucas formula for hydro and plants are much happier. I might try it again if CO2 does not work. I'm just tired of lugging gallons of vinegar home to make natural CO2.

Now one guy wants to put a guinea pig in with his grow to generate CO2. That's great! I love all this spontaneous ingenuity.
Gen Reviewed by Gen on . Build a ph doser/controller - under $100 - tutorial Ok, so what's a huge issue that we're always dealing with in hydro? Ph of course! Personally, I hate having to deal with it multiple times a day, but I can't afford to spend $1500 on a professional doser system. The following system is only an acid doser, however with some tinkering you could likely make it both acid and base capable, however I will not cover that. Making it function as an acid doser is a simple process that will be extremely easy for anyone. Items needed: 1. Milwaukee Rating: 5