D-DDC300 Aquarium Fish Tank Chiller

the unit is a good size and easy to use/setup but that was it for me. if set at 26 the unit wont come on until 27 there are no incremental settings, not stated in the listing. it vibrates so you need a solid surface to sit it on, needs a far bit of space around it to allow the heat to dissipate from the back, the internal temperature gauge is all over the place it has never matched the heating thermostat in the tank or the good old mercury one as a back up. at time sit has been .3 of a degree out. the seller was not helpful at all and gives a sad customer experience when trying to return the unit. i did set it up with not enough space surrounding it on day one but they said to put it in another room? i personally would not recommend for the money or the seller. still trying to return to the seller