

🌊 Keep your betta’s world perfectly balanced with precision and style!
The Marina Floating Thermometer 11201A1 offers millennial fishkeepers an ultra-accurate analog temperature reading with a built-in safety zone indicator, ensuring optimal tropical fish care. Its compact 4.25-inch design and strong suction cup make installation effortless and discreet, while durable materials guarantee long-lasting reliability. Trusted by thousands, this affordable essential prevents costly temperature mishaps and keeps your aquarium environment perfectly calibrated.

| ASIN | B0002AQITK |
| ASIN | B0002AQITK |
| Age Range (Description) | All ranges |
| Best Sellers Rank | #107,281 in Pet Supplies ( See Top 100 in Pet Supplies ) #93 in Aquarium Thermometers |
| Brand | Marina |
| Brand Name | Marina |
| Color | multicolor |
| Customer Reviews | 4.4 4.4 out of 5 stars (18,048) |
| Date First Available | October 30, 2005 |
| Date First Available | October 30, 2005 |
| Department | Unisex-Adult |
| Department | Unisex-Adult |
| Directions | Description The MARINA Floating Thermometer with suction cup is accurate and easy to read. It has a safety zone indicator for most tropical fish. Protect your fish from unsafe temperatures. Simply suction thermometer in the aquarium and you are ready to go. For fresh or saltwater aquariums. |
| Display Type | Analog |
| Global Trade Identification Number | 00015561112017 |
| Immersion Depth | 4.25 Inches |
| Included Components | Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1 |
| Indoor/Outdoor Usage | Indoor |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 7 x 4 x 1 inches |
| Item Length | 4.25 Inches |
| Item Package Dimensions L x W x H | 7.01 x 3.98 x 0.98 inches |
| Item Weight | 0.01 Kilograms |
| Item model number | 11201A1 |
| Item model number | 11201A1 |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Material | Plastic |
| Model Name | Marina Floating Thermometer for Betta Fish Tank with Suction Cup, Aquarium Thermometer, 11201A1 |
| Number of Items | 1 |
| Outer Material | Glass |
| Product Care Instructions | Hand Wash Only |
| Product Dimensions | 7 x 4 x 1 inches; 0.35 ounces |
| Response Time | 500 Milliseconds |
| Reusability | Reusable |
| Size | 1 Count (Pack of 1) |
| Special Feature | floating stick to glass |
| Style | Thermometer |
| Target Audience Keyword | Fish |
| UPC | 015561112017 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 40 Degrees Celsius |
| Warranty Description | Warranty |
K**E
Very accurate. I have confidence in this thermometer. For $2.49 you can't complain.
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 against a few digitals. One being a very expensive digital. This thermometer is spot on accurate.
J**E
Great product
Easy to install Worth every single penny
P**F
basic thermometer but a little hard to see
This is a very basic, simple thermometer that sticks to the side of the aquarium well and does not take up much space inside. Since it is a mercury thermometer, it is very accurate. It has a clearly marked "safe zone" that can be seen easily. The only downside is because it is so small it is almost impossible to see the numbers if you need a precise measurement. For a basic community tank where you are looking for that 72-78ish range this works well. It confirms that the heater is working correctly and the fish are not too hot or too cold.
W**G
Essential for your aquarium
A thermometer is probably the cheapest thing you'll buy for your aquarium, but essential to keeping an eye on temperature fluctuations to keep your fish happy, and the easiest way to check how well your heater is working. This one works great, is inexpensive, and appears accurate. It stays securely attached to the wall of my aquarium with the suction cup, but even when I've knocked it off while cleaning, it's nice that it floats and is easy to grab and re-attach. It also feels well-protected and like it would be difficult to break. I would recommend this style of thermometer (a real thermometer, inside the aquarium) over the sticker-type thermometers that go on the outside of your aquarium, which can be harder to read and are more likely to be inaccurate.
C**8
Works great paired with good eyesight.
The attached photo has one of these thermometers on the back left and right side. They were sticking well for a couple of days. Then they started floating and not wanting to stick. I just wiped the suctions off with a dry cloth and and they stick again. The temperature is easy to read for good eyes. I can see it clearly but my husband cannot. I have a electric heater that has a digital temp on it. It and both thermometers read the same.
R**.
Works OK, a bit hard to read, does not stay stuck, but for that price...?
At a little over a dollar, I shouldn't complain about this thing, but I will. It will not stay stuck to my tank. My water current may be a bit stronger than some due to having an over-sized filtration system, but it doesn't stay put at all. Nice way to double check the temperature when I can find it, but unless the window sticker style thermometers suggest something is way off, I don't bother with this thing. Reading it isn't too bad, but it's certainly not easy enough that you can take a casual quick glance as you pass by your tank. It's small, the print is obviously small as well, and the necessary reading angle is a bit narrow.
H**N
Wonderful value for a great little old school simple thermometer
I'm not sure what product other reviewers received, but the Marina thermometer that was shipped to me is VERY easy to read. Even has a green area to indicate the perfect temp range for most tropical plants and fish. YOU MUST READ IT STRAIGHT ON **see photos** Cannot be READ FROM SIDE VIEW. Simple fix, you adjust the thermometer within the suction cup and VIOLA! Just BE CAREFUL WHEN ADJUSTING, IT IS GLASS AND WILL BREAK. duh Very inexpensive & accurate. No batteries to replace? I'm in. Unobtrusive (@ 5" long) and easily hidden if desired. Personally I do not mind the way it looks in my aquarium. Hope this helps!
M**R
A must if you have an aquarium heater!
Perfect aquarium thermometer! Saved my Betta because I put the thermometer in at the same time as a new heater, and the thermometer showed the water getting too warm. This thermometer is a MUST if you have a heater in your aquarium. Suction cup sticks well, it's small, and easy to read. It also has a green highlighted zone between 70-80 degrees farenheit as a reminder to not let the water get any cooler or warmer for tropical fish. My 8 year old likes to check it to make sure the temp is in the safe "green zone." Great purchase!
G**E
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0**4
Ho acquistato il Marina Termometro Galleggiante in Vetro per Acquario per monitorare la temperatura del mio acquario e sono assolutamente soddisfatto del prodotto. Dopo averlo utilizzato per diverse settimane, posso affermare che si tratta di un termometro di alta qualità, preciso e molto facile da usare. Ecco i motivi per cui lo consiglio vivamente. Pro: -Precisione della Misurazione: Il termometro offre letture precise della temperatura dell'acqua. Grazie alla scala graduata ben visibile, riesco a monitorare con facilità la temperatura dell'acquario, un aspetto fondamentale per mantenere in salute i pesci e le piante acquatiche. Non ho mai avuto problemi di imprecisioni nelle misurazioni, e la lettura è sempre chiara e facile da leggere. -Galleggiante e Facile da Posizionare: Una delle caratteristiche che ho apprezzato di più è che il termometro è galleggiante. Questo significa che non devo preoccuparmi di fissarlo in un punto preciso dell’acquario, perché rimane sempre a galla, pronto per essere consultato in qualsiasi momento. Inoltre, è dotato di una ventosa che permette di attaccarlo facilmente al lato dell'acquario, mantenendolo stabile anche se l'acqua si muove. -Materiali Resistenti: Il vetro utilizzato per questo termometro è resistente e robusto. Nonostante sia galleggiante, non si è mai rotto né danneggiato, anche quando è venuto a contatto con i bordi dell’acquario. La costruzione in vetro è di alta qualità e fa sentire il prodotto solido e durevole. Inoltre, non ha alcun odore sgradevole, il che è importante per la salute dell'acquario. -Design Semplice ed Elegante: Il design è essenziale ma elegante, con il corpo trasparente che si adatta facilmente a qualsiasi acquario senza rovinare l’estetica del setup. Non è ingombrante, e non distragga dalla bellezza dell’acquario, ma è molto funzionale. -Facilità di Uso: Il termometro è molto semplice da utilizzare. Basta posizionarlo nell’acquario e leggere la temperatura. Non richiede batterie o manutenzione complessa, il che lo rende davvero conveniente. La lettura della temperatura è immediata, e non ho mai avuto difficoltà nel comprendere i dati mostrati. Contro: Non ho riscontrato alcun difetto significativo durante l'uso di questo termometro. Funziona come descritto e non presenta problemi di calibrazione o affidabilità. Conclusioni: Il Marina Termometro Galleggiante in Vetro per Acquario è un prodotto eccellente che consiglio a tutti gli appassionati di acquari. È preciso, facile da usare, e offre una soluzione conveniente per monitorare la temperatura dell’acqua. La ventosa è molto utile per posizionarlo comodamente e mantenerlo stabile. Inoltre, il vetro resistente assicura che il prodotto duri a lungo. Per il prezzo, è sicuramente un acquisto che vale la pena, considerando la qualità del prodotto e l'affidabilità delle sue misurazioni. Se stai cercando un termometro pratico e preciso per il tuo acquario, questo è sicuramente uno dei migliori in circolazione
C**H
I have 1 or 2 in all 6 of my aquariums. It's simple, reliable thermometer. Doesn't wear out and look ugly like the stickers. Doesn't malfunction like a digital thermometer. It's perfect.
C**E
La ventouse est de bonne qualité. La lecture est simple. Toujours en état depuis 8 mois.
S**E
Tut was es soll. Preis-Leistung-stimmt.
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