Apologies for not getting to this sooner. I'd recommend using a water bath and placing the probe in that rather than attaching it to the tank. This is good practice anyway especially if you temper the chemicals in the bath as well prior to using them. Attaching the probe to the tank should work, but its effectiveness will depend on how good the contact between the probe and tank is, and how much insulation the attachment method provides. My first attempt with Blu-Tak failed miserably because I forgot that massaging the Blu-Tak before use heats it up significantly. The timer took off at high speed!
Originally Posted by ITD
We're just putting the finishing touches to the product and I hope to ship the first batch this week. The User Manual will be on our web site in the next few days.