Reddit reviews Qooltek Digital LCD Thermometer Temperature Gauge Aquarium Thermometer with Probe for Vehicle Reptile Terrarium Fish Tank Refrigerator(Fahrenheit)
We found 2 Reddit comments about Qooltek Digital LCD Thermometer Temperature Gauge Aquarium Thermometer with Probe for Vehicle Reptile Terrarium Fish Tank Refrigerator(Fahrenheit). Here are the top ones, ranked by their Reddit score.
Remote wired probe can read temperature up to 3.3 feet awayTemperature range: -58°F~ +199°FDesigned to be embedded or can be surface mountedBattery Operated (included) (Aprox 2 year battery life)Size 1"x1.75"Mounting Hole Size 1"x 1.75" (0.5" deep).
As for hygrometers, the cheapest unbranded digital ones are far more accurate than the most expensive branded analogue ones. Any brand/unbranded digital should be okay & accurate within 10%. E.g. I have unbranded similar to http://www.amazon.com/Qooltek-Thermometer-thermostat-thermometer-Refrigerator/dp/B00PQ2GJNY/ from ebay & it's within 1 degree & 1% relative humidity to weather station.
I have the KC2000 Twin model, and I found that around the 3-5 setting is around 38° with the compressor running and 42° standing(Air Temp). I would recommend one of these to help get the temperature just about right. You will need to record a couple of measurements to get the Air Temp and then with a glass of water and a thermometer to get the liquid temp. Ideally you want the liquid temp at around 40° like u/dwkeith mentioned, but keeping it too close to freezing can mess with the carbonation. Also don't forget to clean out the lines every 2 weeks to ensure that there is no buildup of mold or yeasts. I use this cleaning kit to keep the lines, fittings and spouts clean and moving fluidly.