I mix 35L worth of nutes in two 2.5L mixes for my DWC tub.
I use hose to fill 20L in tub.
Mix up 2.5L of Part A, Which is 40ml worth.
Transfere that into tub.
Run hose again for 5L to mix it.
Mix up 2.5L of Part B, Which is 40ml worth.
Then run hose again for 5L to fill up to my full line.
Let...