Ron, I have read your entries on using baking soda for a basic PH raiser. I have also read the Howard M. Resh book, and I have been using his suggestion of the baking soda instead of the $25.00 gallon KOH dilluted solution from hydro store. I'm pretty sure thats what it is. My question is, since you do large scale systems, have you tried this. Have you had any long term side effects. I grow tomatoes using Hydro-gardens 4-18-38 chem grow + epsom salt+ cal nitrate powered mixes. This saves me a lot of money and seems to work better than the liquid solutions, that I've tried. The liquid solutions seem to be very weak in most areas of N-P-K. I've read that you like Formula one A and B, Isn't that very expensive for you? Better be one damn good tomatoe! Sam
sgolwala@hotmail.com