Fluval T200 Fully Electronic Heater for Freshwater Aquariums up to 65 Gal.

Fabulous heater, well worth the slight extra cost. Being able to mount it horizontally is a godsend as it's now completely hidden behind the rocks and plants so the tank looks far less cluttered. My previous cheap heater allowed the temperature to drop by 1 degree before switching on and then raising the temperature 1 degree above my setting before switching itself off. The electronic system in the Fluval has much finer parameters and accuracy, seems to come on at 0.1⁰ below and switch off again at exactly the temperature I've set it to. It's held a set temperature of 25.5⁰ for 10 days solid without more than a very occasional 0.1⁰ downward fluctuation shown on either my digital internal probe or standard thermometer. The fish definitely appear happier and healthier without the large temperature swings. The permanently illuminated power & heating light ring gives peace of mind that it's working at a glance. I have a second tank and will definitely replace that heater with a Fluval when the original that came with it starts to misbehave.

Brilliant and stylish heater. Really good temperature control and love the colour changing light. I always used EHEIM, but never again! Love this!

Great Heater I always use Fluval heaters in my tanks as they work perfectly and last for years Sleek black design looks great they are rather large tho but easily hidden with decor Not to expensive either pretty good price from a reputable brand Would Highly recommend Will be buying another for my other tank

I tried to get a picture of the heater for you but it is at the back of my tank, above the bubbles. I placed it there so that the water would circulate well, and so it would evenly distribute the same temperature. Apart from the fact that it will NOT go below 24.3c (It is meant to start at 22c, and I was hoping to set it at 23c or 24c) it works well, and it keeps the water at the same temperature. I purchased the next sized heater than necessary to save energy costs, and to prevent the heater from having to work so hard. My digital thermometer has constantly read 24.3c or 24.2c. The little red light comes on (I don't notice it being my castle) when the water is being warmed, and it is blue when the water is at the correct temperature (again, I don't notice it behind the castle). (Note: I make sure any new water I add to my tank - water changes etc - is as close to 24.3c as possible, so not to stress the fish or the heater. Nothing worse than being in a nice warm shower and it suddenly goes freezing cold on you... at least once the shock wears off humans are usually fine.)

Brilliant very stable temperature nice blue or red light very cleary

Great product and price works great

Great product easy to use,

Was fine for 2 weeks. Added over £150 worth of tropical fish to my aquarium, the heater ran fine. Then I got home from work yesterday to find ALL of my fish dead because the temperature had dropped to 18 degrees. I've tried to contact Amazon and the seller but the app takes me in loops. To say I am angry is an understatement. I obviously checked all of the connections and sockets and no problems there, this faulty product has cost me a lot of money, stress and hassle. It will be the last time I ever buy fluval again. If I could swear here, I would.