Any UV sterilizer will kill green water algae. If it doesn't, there's something wrong with the UV lamp (too old), or its quartz glass housing needs to be cleaned.oh, ps.. Any studies on its effectiveness with certain algae?
The UV lamp zapps algae cells as the water passes through the filter. UV sterilizers are a mainstay for pond hobbyists to kill green water algae. It will not kill attached algae (hair and blue-green algae) for the simple reason that these algae don't pass through the filter.
Folks, UV light has a common killing mechanism for all cells. It kills by damaging RNA and DNA, two essential components of all living cells. Thus, UV light will kill many of the microorganisms, viruses, small parasites, and green-water algae that pass through the filter.
Newly purchased fish are often:
- carrying disease organisms they've picked up along the way from fishfarm, fish wholesalers, aquarium store, etc
- have not yet developed immunity to the microorganisms (natural flora) in your tank
- severely stressed by transport
A UV sterilizer severely reduces the number of potential pathogens, so that the new fish has a chance to develop its immunity and fight off disease.