I recently returned a Teclima CA200 chiller for my new 60 gal (plus 20 gal sump) 400w MH seahorse tank. It was a toy that ran all the time and didn't do much, but the company (Fritz) gave me a full refund just because I wasn't satisfied. That was very surprising- they are a really great company but market a poor product. I replaced it with an Arctica 1/4hp mostly due to a post from a satisfied customer here in our club. I love it, it is quiet and really works. The only problem is it thinks it is about 1.6 degrees warmer than it really is, but that is adjustable. I think I am going to buy the larger Arctica 1/3hp for my 120gal reef tank, and sell the noisy Custom Sealife 1/3hp to the highest bidder. Noise is something you really need to consider, and all brands claim they are amazingly quiet. Not so.