CleanLight Water Purifier 12
Water Purifier 12: Safe water for hydroponic growers.
Eliminates fungus spores and other diseases from your water, without using toxic pesticides.
Safe for plants. Safe for plant food. In fact, this is the same technology, by Philips, that some cities are now using to disinfect drinking water without chlorine.
Easy to install, runs as long as your water circulates.