As the title says, Where do you get your KH2PO4? Is there a good place to find it other than www.gregwatson.com or is it the best place? Its not that I don't want to buy from him, but the shipping is pretty high.
I use Fleet enema so I haven't sourced it KH2PO4 from anywhere, but honestly give most if not all of my buisiness to Gregg so I doubt I'd even look around when buying it.
Dave
I buy my KH2PO4, along with KNO3, trace element mix, MgNO3, CaNO and K2SO4 at a hydroponics shop. I get 500g tubs for a few dollars each. I buy MgSO4 at the drugstore and KCl at the grocery store.
Fleet Enema is really cheap by comparison to most of my Ferts. It is extremely powerful and not expensive to begin With. I bought a twin pack a about 18 months ago and have kept 4 tanks (10g, 20g, 15g, and 115g) Dosed well above 2ppm for the entire 18months. I still have half a bottle. My tap does provide some Phosphate but usually at or below 1 ppm. Fleet enema is measure in drops, and it takes very few drops to put your p levels in the range you want.
Dave
I have someone here in So. Cal that had made a purchase from Greg Watson & I get my KNO3 & KH2PO4 really cheap! I got prolly a year's supply for like $2!
Now I need to get some Plantex from him and I'll be all set!