Reviews by our members

• 2

  g.thalassinos

  2024-02-15

  I rate the product as inadequate.

  Its features are: 150W power, suitable for aquariums up to 300 liters, and non-adjustable temperature of 25 degrees +/- 1 degree.
  Nice packaging, quality construction, at the familiar level of EHEIM. It is considerably shorter than the ThermoControl I had before.

  I need 26 degrees in my aquarium, but I bought it as a temporary solution until the replacement of my old one, which is still under warranty and has broken. The one I had until now is the EHEIM ThermoControl E125, which is 125W / 200 liters, but more expensive. This would be the backup for a difficult time...

  So, on paper, the ThermoPreset appears to be more powerful and with much larger volume margins.

  I received it the day before yesterday around 4pm and installed it in my aquarium, which is 180 liters, with a water height of 46cm and had dropped to 20.5 degrees due to the malfunction of the previous one during the weekend. The thermometer I use is glass and at the bottom.

  The device was installed according to the instructions in the manual. It has a red indicator light when heating, which turns off when it stops. Once the light goes off, the device has obviously reached its preset temperature. The theoretical temperature is 25 +/- 1...

  After 40 hours, it maintains a steady temperature of 23 degrees when my house is at 20 degrees. In fact, I had to lower it to the bottom because when I had it in the middle, like I had the previous one, the temperature had stabilized at 22 degrees. So, I thought of lowering it as much as possible since hot water rises, and thus gained another degree.

  I bought it as a cheaper option, but it had to do what it claims. My aquarium is only 60% of what it theoretically covers.
  I don't understand how a device that is more powerful and for larger volumes doesn't do what it says when the 125W ThermoControl is sufficient. I didn't buy a large one, just the previous ThermoPreset model was smaller.
  And the issue of price didn't impress me. I didn't consider it "cheap." It is cheaper because it is a simpler construction. It doesn't have moving parts, so it can be sealed more easily, and it also has simpler electronic components.

  The only explanation for me is that it doesn't have good electronic components. And here lies the main issue. With adjustable ones, even if they don't measure correctly, you can always choose a different temperature and "adjust" it to your needs. The non-adjustable one must be accurate because your hands are tied.

  I have requested a return and will buy a second one like the previous one.

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• 5

  p.arabatzidis

  2024-06-13

  Verified purchase

  Very good

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