Hi Gang, I have a USED, but perfectly operational, Tetra Pond 36 Watt UV Pond Sterilizer. I will also include a BRAND NEW IN THE PACKAGE bulb with it as well as a used bulb currently installed in the unit. (The bulbs are $85 on their own) Here are the specs: * Tetra Pond® Green Free™ UV Clarifiers provide permanent control of suspended algae which cause green water * Heavy algae blooms are removed in most ponds within five days, keeping the pond algae free *This means water clarity is improved while reducing pond maintenance * Each unit is compact, durable, easy to install and energy efficient * The most efficient flow rate is 50% of total pond volume * The UV Clarifier is not submersible and should be brought in during the winter months when temperatures are at or below freezing * 8800 gallon maximum pond * 4400 gallon maximum flow * 1, 1-1/4, 1-1/2 tubing size http://tetrapond.com/sites/tetrafish/catalog/productdetail.aspx?id=1276&cid=409 Location: RI/MA it's NOT ok to contact this poster with services or other commercial interests rhodeisland