VIVOSUN 4-Pack Digital Aquarium Thermometers with LCD Displays

jason casillas: They arrived quickly and work well, we use these in multiple cold plunge tanks batteries do not last long so get some extras if you plan to use them long term.

United States on Aug 19, 2023

F.Spencer: Excellent product and price. Bought two packages previously and now ordering another.

Canada on Jun 25, 2023

josee poulin: Ne donne pas la bonne température

Canada on Apr 22, 2023

bungy0595: Not accurate or even close

Canada on Jan 31, 2023

Lindsay: These are easy to read and more accurate than the thermometer strips you can stick on the side of the tank. The only negative is that the suction cups are terrible. I fixed the problem by putting mounting squares in the cups and squishing them onto the glass.

United States on Jan 19, 2023

Shalini Banerjee: Works great but suction cups don't work

United States on Dec 06, 2022

Ben's Real ReviewBen's Real Review: I tested these all in the same cup of water when they arrived. 3 out of 4 that I got are within 0.2 degrees of each other so that's good in my book. The 4th is off by 1 degree and also has trouble staying in Fahrenheit mode. It flickers between F and C if I touch it. The 3 good ones are on par with my classic style thermometer.

United States on Jun 30, 2022

Rgbyr: Only using 2 of them right now. The temperatures .2°F within each other when in the same tank. If they keep working this way, they would be a good value for the money.

Canada on Mar 05, 2022

Consumer Report: Purchased approx 4 months ago and all but 1 does not give even close to accurate temp. Temp is actually 81 and they say 72. I even purchased new batteries just in case and the temp still completely wrong. Save your money and just buy a glass thermometer or a laser way more reliable.

Canada on Oct 20, 2021

NorginNorgin: I gave a 4 out of 5 rating because the suction cups are terrible (they are part of the product). Plastic is too stiff and does not maintain suction.
As far as the thermometer goes, I ordered the Ivosun 4 pack to handle a few different tanks. To compare I set all 4 thermometers in my 70gal tank. The results were pretty good as far as common temp accuracy.
4 Ivosun digital thermometers ranged 78.6 - 79.1 deg, average 78.8 deg.
4 Floating thermometers ranged 76 - 79 deg, average 76.5 deg.
1 Topfin digital at 79.7 deg. (now in the spare parts box).
Berrcom handheld digital IR thermometer @ 7 separate surface temp readings average 78.8 deg.
Hope this helps make a decision. Now it's a matter of time to see how they hold up. At this point I wouldn't have a problem buying more.

United States on Feb 08, 2021