this is all I could find. None of the grow shops had actually what you said so I followed instructions on back. Would you still recommend 1/4 tsp per gallon ?
That's not K sulfate....
That's plain K.....they made it from K sulfate...
Boil 8 TBL of Epsom and 1.5 tsp of dark brown sugar. In 1 quart of RO till dissolved.
Mix that with 3 more quarts of RO and store in an opaque gallon jug.
First 4 weeks of bloom - 10ml of that juice with a gallon of water and 1/8 tsp of the K.
from week 4 on - 20 ml per gallon and 1/4 tsp of the K in a gallon of feed.
OR
just get K sulfate from Amazon