HI; I'm looking for a source for Potassium Nitrate (KNO3). I've tried every likely source I can think of in my area and have struck out every time. I'm trying to bring my nitrates up to a reasonable level to get my plants to recover and start growing again. Currently my nitrates are 0.0 and the plants are starting to melt away. larry botkin at jorsm_com Larry botkin at jorsm_com