Recently, me and the kids started a hobby. An aquarium. I got them a 50 gallon tank and a couple of juvenile fancy goldfish. Have read somewhere in the net that the water temp should be maintained around 22 deg celsius. Room temp fluctuates the water temp from 28 to 30 deg.

Aquarium chillers are quite expensive and have found some hobbyist building a thermoelectric cooling device.

My question is that if the parts are readily available sa suking electronic shops or mahirap ba source ng parts? Im planning to build one for our tank. Anybody here na aquarium hobbyist?