How hard is the clean up after the fermentation with gelatin? What is the recipe, average home brew formula + Knox blox? I am not sure I see any advantage over a well thought out recipe, less the gelatin.
My home brew lasts over three weeks before I switch it out. I could use it for longer periods but switch it out to keep the CO2 levels consistent. I suppose I could add an extra step, gelatin. But, would it lengthen the time of fermentation any more then what I now have? Most of the fermentation and all the problems are still going on in the water of the reactor. Alcohol levels would still determine the end of fermentation. My guess is that even though they need to break it down, the added protein does sustain the yeast in a way simple sugar does not. Solution, add nutrients to the recipe and see if it works just as well w/out the gelatin.
Just another option with or without gelatin.
Leave some room at the top of a one gallon container and add about,
3.7L tank water (lots of good stuff in fish waist to feed yeast)
1mL pH stabilizer (pH ~5.2 is a good range for yeast)
4 cups (1L) sugar
(4:1 ratio of water to sugar works well with champagne yeast - how much sugar is used depends on the yeast)
1/2 tsp Champagne yeast
1/16 tsp Fermaid K, for a well balanced diet.
(this stuff is the bomb for stuck fermentations)
Rehydrate and add Fermaid K after 1/3 sugar depletion or after one weeks time.
Fermaid K, is a blended yeast nutrient containing, Magnesium Sulfate, Inactive Yeast, Thiamine, Folic Acid, Niacin, Biotin, Calcium, vitamin B5 (Pantothenate) and DAP (Diammonium phosphate).