Noob to DWC here. I'm on my second batch of tea and am suspecting I'm doing something wrong. In my first batch, after 24 hours my brew had some slimy biofilm on the tubes and stone, but this time after almost 30 hours I see no changes. No foam on top, no biofilm no nothing.
I can't get my hands on the exact items that are recomended so I'm brewing in 2L (0,52 gal) of RO water with 20 mL (4 teaspoons) of EWC, a bit of great white and 6,5 g of fructose sugar. Temperature is about 19C (66F). Are my ratios OK? Is temperature too low maybe?