Most Probiotic Ferments do best in a warm temperature setting. We recommend a temperature range from 74 F to 84 F (22-28.8 C) ,for Kombucha, Jun, Ginger Beer, Water Kefir, and Vinegar. While Villi and CSY and vegetable ferments like sauerkraut do well in the mid 60's (15.5 C) While one does not need constant temperature the greater the consistency the more reliable and predicable will be your ferment. OPTIONAL digital regulator helps maintain the optimal temperature without fear of over-Heating.

Happy Herbalist offers Kombucha heating mats online like:

--Heating Mat 20" x 20 “ 45 watts- $49.95
--Heating Mat 48" x 20 “ 107 watts- $71.95
--Heating Panel + Reg- $75.95
--Heating Panel 25 watt- $39.95
--Heating Mat with Digital Thermostat Control 9 inch x 19.5 inch- $69.95
--Heating Mat 7 watt 3 x 20- $19.95
--Heating Mat 17 watt 9.5 x 19.5- $28.95

We use these heaters not just for Kombucha but for our JUN, water kefir and milk kefir grains as well, depending on how cold it is. The ideal scenario would be a heater for each ferment, but if you have a lot of them, that may not be possible. Multiple small jars or a few gallon jars can each be wrapped around the heat strips we offer, so it may be possible to have a whole slew of fermented veggies going with just one or two Kombucha heating mats.