mitch Well-Known Member Joined Aug 4, 2014 Messages 182 Reaction score 97 Location Loughborough Sep 26, 2020 #21 BrewMeHappy said: I normally use about half a sachet. It's more than enough and I could probably get away with using about a quarter. Click to expand... I used 3.5g. Ive woken up and the TC baby is bubbling nicely this morning at around 20 degrees.