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Cobalt Accu-Therm Submersible Heater
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  • Cobalt Accu-Therm Submersible Heater

Cobalt Aquatics
Accu-Therm Submersible Heater

  • Good basic heater By Ray on 11/1/2014

    Picked up the 100w for my water change water. Good basic heater.
  • Great heater! By CTReefer on 9/15/2014

    I use a 150w for mixing new saltwater, have no complaints after 4 months.
  • Good heater for mixing saltwater By DJ on 9/8/2014

    The reviews for this concerned me, but since i use it for mixing saltwater it is perfect. No problems or issues to speak of. Good manufacturer and product
  • Decent Heater with few flaws By Carlson on 3/24/2014

    I have not had any problems with the 250 wt heater. The temperature rang is off sometime by up to 5 degrees but i ha34ve got a lot of use out it and cannot complain.
  • Never Even Got A Chance To Get It Wet By Jordan on 2/21/2014

    This was one of those purchases where it was something I didn't need but wanted to have just in case one of my heaters broke or I needed to use an extra one for heating more water. When opening the cobalt box, the box itself was in perfectly fine condition. However a shard of glass about half an inch long fell out of the box. The plastic piece that cups the bottom of the heater was not attached to the heater which some where along the line caused it to get cracked inside the box. The heater was obviously no good with a hole in the glass. Compared to two other glass heaters I have, this one seems much more fragile. This will probably be the last time I buy a glass heater.
  • Early Failure By Dr Allison on 2/5/2014

    300W model lasted just over 3 months. I find that completely unacceptable. I'm going over to the dark side with a thermostatless heater so this is never a problem again.

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