What were your biggest purchase mistakes?

[Funky_Fish14]

Originally Posted by whatcaneyedo

AquaMedic Biotherm Controller. They don't even make these anymore... Two of them lost their their calibration within two years and cannot be re-calibrated. What good is a temperature controller that is out 8ºC?
AquaMedic Titanium heaters. I bought three and had to send three back when they would no longer heat up. All within a year.

I have to say i've had the exact same problem! Not as many times, but once for the controller itself and twice for the element!

Another one for me:

Fluval Spec: Purchased and started to leak instantly. (though it wasnt discovered till two hours later... luckily it was only 2g of SW on my desk).
Fluval 304: Leaky! Brand new. Returned. Eheim wins.