Marineland Precision Submersible Heater, for Freshwater or Saltwater Aquariums, 250-watt

Edit: promptly replaced by the seller, once i brought it to their notice.I had bought this as a spare heater last year. I started using it last month. But within a month the heater has stopped working. The red light that indicates it's on, gets turned on but the heater does not heat up at all. I cleaned it, I turned the dial around. But nothing seemed to help. Can you please me to get it to work?

I got a really nice price so I purchased this when my Cobalt Heater stopped working after a year. It seems for my long 20 gallon I need 150 watt even though the Marineland Chart shows 75 watt for 20 gallons would work. This came preset at 78. I plopped it in, let it sit for 20 minutes, then plugged it in. When I checked my manual thermostat, it read exactly 78 degrees after 6 hours or so. I turned it down 1 degree to 77 because it is winter currently and did not want it running more often. The water looks clearer and maybe that brown algae that started appearing will go away. Only kind of drawback is it is so big and can't touch gravel. It looks like something out of the Borg. And the long side because of weight I guess tends to dip the suction cup down a bit, and I can't keep it perfectly straight. But I was having trouble heating my tank so something this powerful was needed. The temperature on the heater is somewhat hard to read. I think it shows 76 when it should show 77 but that's why I have a backup thermostat in the tank.

I got this to keep my 75-gallon piranha tank at an even 80 degrees at all times, and it does the job well! It's super easy to set up and operate. Just set the dial and forget about it. I really like how it has a built-in thermometer so you can monitor the tank's temp at all times. Highly recommend this handy tool!

Stopped working in less than a year. Light stayed on but no heat. Hopefully my fish will not die before I can purchase another heater. Too expensive a product to fail in less than a year. Do not purchase

This is a solid heater. I have it in a 40 gallon breeder and it's working great.

I love this product. Cool looking, great design, easy and reliable to use. I had one of their first 100w versions made back in the early 90's. It lasted me through countless different tank set ups and break downs. I used it in Salt water, and Freshwater alike. Unfortunately, after 20 plus years, it finally showed signs of ware, with condensation and dripping forming on the inside. Not to mention I was last using 100wts on a 60 gallon tank. So after saying all that, I can not recommend enough.One problem.... It is beefier, bigger, longer, wider, then my 100w and with my aqua scaping, it does stick out. But that is a small issue comparatively.

This has out lasted all of my prev brands. Been in Aquariums for 67 years this is worth buying

Works great. I've had zero issues after 6 months.

Es un calentador para mi acuario y si me gusto .

Fonctionne très bien!

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Es importante sumergirlo y "aclimatarlo" para que al encenderlo no se "queme" funcione por más tiempo, excelente producto, mantiene la temperatura estable

Perfect