MARINA Submersible Pre Set Heater 25w

Great little heaters. Nice and compact and well built. Have them in several tanks and have never had any problems. Have some of the best sucker pads I have come across on a heater and the temperature adjuster is also one of the best I have come across.

Great little compact heater with good auction cups. Originally bought for 10l hospital tank so wasn't used continuously. Repurposed as shrimp fry tank. Unfortunately thermostat has just broken after 6 months of 24/7 use. Temp was at about 30 degrees (in 10l with micro bubble filter) as heater won't shut off so luckily not high enough to kill anything short term. Still works with a timer clock though!

Good little heater i only use for making up salt water for ref tank and this does the trick suction pads really good hasn't fallen of as yet you will need a thermometer for finding your temp though as not no predefined temps on product just up and down knob

I purchased this for my small sick tank and found it to be reliable and perfect so far. very pleased

I had to return mine , possibly faulty or at least false advertising . The Temperature dial had no effect on the heat output. I calibrated by leaving unplugged in the cold water for 30 minutes but It went to 28C regardless of where I turned dial.

This a nice compact size with good suction power so holds well. Protective base a good thought. This would have got 5* if it wasn't for the most important thing on a variable heater, there is no scale so you don't know what you have set it too. Had I known this before i ordered I would not have bought This, as there are cheaper heaters that have a readout.

Great little heater, just right for my need. I am using it to keep electrolyte in a 5 litre tub warm. The short length means I can fit the lid on. Good price too.

Don’t buy!!!Good size heater but unable to adjust temperatureWater temperature will not go lower than 37 degrees even turned right downOk if you want to cook your fish!!

Calienta un tanque grande

Passt super in das kl Nano Garnelenbecken.

No mantiene bien la temperatura y el acuario es de 10l.

Pretty accurate although I notice it does drop in temp for some reason but overall fairly accurate and my beta fish is making lots of bubble nests so he obviously gives it a thumb's up too!

Utilisé dans deux de mes nanos, un de vingt litres et un de trente. Pour l'instant, aucune défaillance à signaler. C'est un petit chauffage qui fait bien son boulot. Seul bémol : L'absence d'affichage des degrés, ce qui fait qu'on doit parfois un peu jongler le temps de trouver la bonne température.