Accurately Measure Water Temperature with the Marina Floating Suction Cup Thermometer

Graham: Tells the temperature in tank, what more do you want!

United Kingdom on Oct 06, 2023

MtsWildOne: I'd like to keep my guppy tanks at a constant temperature and these thermometers are easy to read they don't come unstuck from the side with the suction cup and they seem to be very accurate.

United States on Oct 01, 2023

I.Mc: Did what it said on the tin, although the usual issues with suction cups detaching over time.

United Kingdom on Sep 28, 2023

Megan lee: Suction cup is very strong very good quality!

United Kingdom on Sep 25, 2023

Client d'Amazon: Fiable et simple d'utilisation

France on Sep 11, 2023

Anneli Jakobsson: Helnöjd

Sweden on Sep 06, 2023

kMarie57: Good seller and shipping/shipment. Makes a lovely decor.

United States on Jul 22, 2023

Jeff henderson: Suction cups are worthless.

United States on Jun 13, 2023

Kodee: I was using one of those ubiquitous cheap digital thermometers on Amazon. The temperature fluctuated a lot with it. And I just really started to doubt it. I ordered this guy and it was 6 degrees hotter than the digital! Sure enough the digital thermometer was way off by 6 degrees! My poor fish was in 86 degrees water for a month. I am new to the hobby. And he is a betta....so this is the extreme end of the high temperature range. I'm just so glad I bought this.

I tested this in a cup crammed full of ice and some water. This temperature read a perfect 32 degrees....this is how you calibrate a thermometer. The digital thermometer read 26. I don't think i'll ever be able to trust a digital thermometer again.

The suction cup is glued in place. You can not swivle the thermometer to face a certain way. This doesn't bother me as it ws so cheap.

This is $2.49. It works great. And is easily hidden behind a plant. I think the people who said the suction cup broke....or left a mark....i'm pretty sure those reviewers have acrylic tanks. Probably low quality acrylic.

This is a $2.49 thermometer that is 100% accurate.

UPDATE: i have now tested this thermometer...

United States on Sep 08, 2018

CNH: I feel a little silly writing a review for this but just in case it helps someone else . . . ordered three of these and they do the job. It is a simple glass mercury driven thermometer with a green safety mark so it's easy to see if your temperature is in the safe range. It is large enough to see without being obtrusive. I used to have a large hang in the side tank that you couldn't miss . . . subtracted from the tank. You can use the thermometer with or without the plastic suction cup. The plastic from the suction cup quickly turned from a clear to a milky white. Not sure why that happened, if it reacted to the warmth of the water or something in the water, but all three did it. You do have to be careful to make sure the thermometer is high enough in the suction cup or it will pop off the side or pull out of the suction cup. I found that out of the three I bought, two suction cups work fine, the other refuses to stay on the side regardless of where or in which tank I place it (I have both acrylic and glass tanks). The thermometer does float in the tank, but the problem is it bobs around so you are never sure where it is, and it's hard to read temperatures without pulling it out...

United States on Jan 19, 2017