Active Aqua AACH100HP Hydroponic Water Chiller Cooling System, 1 HP, Rated per hour:10,050 BTU, User-Friendly

The Hydrofarm Active Aqua Chiller is an effective method for cooling water in hydroponic or fish tank systems. The chiller has a large refrigeration capacity, and an anti-corrosive pure titanium evaporator for both fresh and salt water. It requires a small water pump, recommended flow rate 132-396 gallons per hour, to circulate the water through the chiller. The unit includes 1/2" and 3/4" barb fittings. Users recommend flushing the chiller annually with distilled vinegar (2 parts vinegar to 3 parts water) to remove calcium deposits and mineral buildup. It’s advisable to purchase a larger model, such as the 1 HP, for systems over 100-gallons. One reviewer expressed their surprise at the noise level, which was significantly louder than anticipated, while another reviewer found the unit to be whisper-quiet. The size and pump required varied according to user requirements, but the chiller's efficiency was commended, and the reasonable cost praised. Users were advised to purchase tubing independently for their setup.