Thermoelectric Peltier Cooler for my Aquarium

Been working on a d.i.y project. It's a TEC water cooler project, in which i hope it will reduce the temperature of my 5 ft aquarium to at least 3 degrees below ambient. Hopes are high, since the waterblock is so small, i don't think it will have any effect at all to the water temp. Since i got all the things laying around, (except for the TECs). so i just built everything up and see whether it works.

I used 2 TEC peltier coolers, attached to a simple pump, and a PC power supply. Still in testing, or should i say "proof of concept" stage.

What a mess.