I bought 2 of these in November 2020 they worked great at first now neither one turns on and off the work cycles anymore.

Please contact us on Amazon via email and describe the issue that you mey in details. We will try to help you with technical support and give you a satisfied result.

What is the update mentioned in the description?

Hi, thanks for asking. The only updated for this unit is the probe , this probe is designed for aquarium.

where is the best place to place the probe in a 20 gallon tank?

The following are the suggestions of our other customers for your reference: #1 Probes together in high flow before the heaters (not close to them). You want the flow to hit the probes before the heater. #2 In a display then in good flow away from the heater, you don't want the flow carrying water from the heater over the probe. In a sump also in good flow but before the heater. The flow should carry heated water around the tank before it gets to the probe.

ASIN	B07KC24CKD
Batteries required	No
Customer Reviews	4.6 4.6 out of 5 stars (871)
Date First Available	11 June 2019
Item model number	ITC-306T-A
Product Dimensions	14 x 6.8 x 3.3 cm; 431 g

ITC-306T Aquarium

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Description

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