For a system that large just go to a farm supply store and they have plastic measuring cups that range from 150ml to one gallon. They are cheap too!
tikiroom Reviewed by tikiroom on . what to use to measure nutes. I normally only mix 2 gal at a time and am having trouble finding something to measure the right amount each time so its off "either alittle high or low each batch" . What do you forum guys use. Rating: 5