JW Pet 21600 First Impressions
Working wonderfully!
These digital thermometers are great and there is no guesswork involved. So the extra units will always come in handy. Since it is a mercury thermometer, it is very accurate. I did have a problem with one in my first pack of 6. I have mine on my 60 gallon cube marine tank. Only thing I don't love is how long the cord is. When and if we run out of this batch, I'll instantly order another batch.
- Editor's Impressions Of The JW Pet 21600
- Thermometer Accuracy
- Build Quality
- Value For Money
- Feature Set
JW Pet 21600 Final Thoughts
I like this.
I used these on a number of my aquariums that have discus fish in them. It works equally well on all of them. Very impressed, I have now had them in used for a month so far. So far, they're all doing their job in my four tanks and I am quite content. So this is the extreme end of the high temperature range. I have to admit I had two reasons for buying six. The extra batteries where very much appreciated and came in handy.
Overall Score
4.5
(1488 Points)

- JW Pet 21600 Features & Specs
- In-tank thermometer is secured with magnet outside the tank
- No suction cups needed
- Green safe zone indicates optimal temperature range
- Large easy to read numbers
- Manufacture: JW Pet Company
- Product Dimensions: 4 x 7 x 0.5 inches; 1.12 Ounces
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