What were your biggest purchase mistakes?

[paddyob]

Originally Posted by BlueTang<3

Worst thing i bought were the finnex titanium heater and asm skimmer.

+1 Finnex 300 watt. POS. Although... it does keep my 20 gallon make up bin warm.

[randallino]

Okay I can play this game too...
Solaris LED lighting, need I say more. Anybody what a fixture for a DYI project?
Aqautronica controller is another example of a high end P.O.S., don't get me wrong it works, and I'm one of the lucky ones! With no recent updates or upgrades for firmware, etc. the last update was 2008. I can't program it using a computer because it just wouldn't log on.. I could go on and on..... It's diffidently past its prime compared to the more reasonably priced Apex, D.A. and the Cadillac of controllers GHL.

[phreezee]

Wasted money on UV Sterilizers back in the day. Never decreased algae or killed ich.