Fluval Submersible Glass Aquarium Heater, 50-watt

Not great, but ok.

I have several Aqua Top heaters, but I had a 50-watt heater that developed a tendency to not shut off. I like Fluval products so bought the 50-watt heater to replace the Aqua Top. The Fluval keeps the water temperature constant, but the temperature does not correspond to the dial setting. The silver color looks nice, but its more noticeable than clear glass. It has a "cool blue" on indicator light but it's so dim that it's hard to see when the aquarium light is on. The heater seems to be ok, but I'm not overly impressed.

Too Tall for A Dennerle Ten Gallon Tank

The top sticks out so the lid can't be placed on the tank so I'm returning this Otherwise, it looks well made durable. I'd keep it if I had plans for a larger tank. My advice is to check your height and lid placement. It says up to 15 gallons but that is relative to your tank.

Great product, very accurate

So disappointing

I bought this heater for my 29 gallon setup. It had been recommended to me by several people, so I splurged on it. So disappointing! I'd keep turning the temp up and my tank never went above 72. I even adjusted the dial as high as it would go and the temp stayed at 75. Don't waste your money on this heater!

Great Value

Works as described. I am buying another for my second aquarium.

Excellent purchase

The best aquarium heater I have purchased. Extremely accurate and the appearance in the aquarium is elegant. In fact, I am purchasing another one to replace a different heater that I purchased that is NOT heating the aquarium sufficiently.

stopped working

ive had this for two months now and it just up and stopped working on me. could i get a recommendation on a new one?

Too big for 5gallon

This is too tall for my tank. I have the 5 gallon Aqua Culture starter kit and it’s much too tall for my tanks water level. I’m sure it would work fine for a taller tank. Definitely going to try to return.

Great Heater

Pretty nice heater. I was sceptical about the glass cover but it does look nicer I think than plain black. The picture does not do it justice. I have it in a 5 gallon nano so no, it does not fit in the filter area if you keep the sponge. But it is fully submersible so you can put it like mine in the tank. The downsize is it is visible, the upside is it has no issue at all keeping temp. The smaller size ones might

very noticable

This heater works OK. I have the white Edge tank so the silver and black on this heater make it very noticable, and due to it's large size, it's hard to hide. The best way to hide something is to make it blend in. This does not.