Ammonium sulfate ?
I have never used the stuff before and have a few questions that I hope Fruitnut or another can answer.
I bought a 51 pound bag of ammonium sulfate yesterday and the first question is why does it come in a 51 pound bag? There must be a reason for the odd amount. The stuff I bought is water soluble.
The bag did not say 21-0-0 on it or anything else. It is made by American plant food company if that helps. I know they add it to roundup spray tanks as it makes the round up more effective. Am I to simply take it on faith that it is 21-0-0 or is all ammonium sulfate 21-0-0 by nature?
The dose I am using is a bit low but figured to start 4 cups to 300 gallon tank to fertilize my BB. I know I could use 6 cups for the 300 gallons but being a bit cautious.
When added to my high bicarbonate water the PH stayed at 7.2 . Should I adjust the water with acid then add the ammonium sulfate or just use the ammonium sulfate without the acid?
Anything else I should know?