Originally Posted by greendoctor
Depends on how much this costs per lb of K. I also need to consider the source of K as well. This is liquid potassium hydroxide. My concern is with how well this would tank mix with other products such as micronutrients. Overall, greenhouse grade crystalline potassium nitrate is the better product. I have a hard time finding something that has all of the positive attributes for better money. I am normally getting. Another thing to look into is KTS or potassium thiosulfate. That is normally available in 275 gallon cubes. However, it too is very alkaline, risky to spray on at low volumes and not irrigate in immediately.
I have found a sprayable source of potassium sulfate at a decent price. I was wondering why you prefer potassium nitrate. I know nitrate is a saltier product but has slightly less chlorine.