zoohi Aquarium Heater 300w, Fish Tank Water Thermostat Heaters, Adjustable Temperature for Up to 80 Gallon 3.3 ft Fish Betta tanks

I bought this heater as the old one was very temperamental and i was worried about frying my fish. It arrived in post very quick and well packed i needed to install it straight away and as soon as id positioned it on the glass (the two small suckers part of the plastic protection around the heater) it stayed where it was, another problem with the old one was that the cups were loose around the heater glass and didn't stick firm on the side of the tank. I checked the thermometer temperature.. it was already preset as all i did was plug in and the light came on straight away, my water temperature was a bit warm and the heater light went off and as soon as the temperature had filled the light came on and ever since has worked perfectly maintaining at the correct setting.

Used for less than 2 days. There is a feature in this water heather, when it overeat it simply turn off. I bought a 300 watts as I have a 250 litres tank and in theory this should do for 350 litres. Reality it doesn't! To raise the temperature you have to put it a max. if you put it a max it will switch it self off after a few minutes and will start again only manually. Twice I found the water absolutely freezing. If you care about your water friends don't buy it !!!

This heater is not accurate I have put the heater up put it down to my degree readings on my pump which as a desplay which tells you temp of water I run a maraine tank the temperature as to be bang on to me it is faulty you put it up to 77degress the scale is way out on degrees the light does not come on you put it down to to 50 degree's the the light does not come on gone back to my old heater will get something better took a a chance on this after reading reviews trust me don't bye

Starting up my 6ft aquarium and thought ld buy 2 new heaters. Dispirite the water being very cold straight from the tape these heaters wouldn't even stay on to heat the tank!! The thermostat Kept cutting off so not ideal at all. The fish would be kept cold waiting for these to heat your aquarium. I've thrown them in the bin and found a much better replacement. Not recommended at all guys. Don't waste your money.

Horrible experience....Bought 2 for my tank and one of them came with the glass shattered. It comes all covered in a plastic container and it is hard to check the heater unless you take it out of the plastic cover.If i didn't check it before, i would have killed all my fishes and god forbid i had my hand in the water...Careful before using, check it at every corner.It came well packed and both boxes were intact, so it was faulty from manufacturer.

Had this delivered christmas eve because old one had stopped working, 4 weeks later, 3 days after I can return it because it's faulty, it stuck on and cooked all my fish, a selection of Neons, Angel Fish, Gouramis, Cat Fish and Algae Eaters, Checked to make sure all settings okay, changed water in tank, next day it did it again, lucky I had not replaced any fish. Not risking it again, lost some expensive fish. Make up your own mind if you want to buy it.

Super like this heating rod, after the trial is very surprising, the temperature is accurately displayed to decimal, especially good, very useful, and can automatically switch, so that the fish tank has been in constant temperature, not a waste of electricity.

A great heater, it was priced low compared to others of the same power and the protective sleeve is a nice bonus to help protect both the heater and fish. This one certainly heated my tank quickly too and the useful degree's on the top are accurate.