03-02-2010, 10:46 PM
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I do know that UV rays will kill ich, but not cure ich, so your chances of your fish getting ich are greatly reduced. Here's a bit from the first link I alluded to above: "Ultra violet sterilization is one of the most effective means of disease prevention in aquariums and ponds and for general water quality control in aquariums/ponds, as well the use of UVC Sterilization is useful in home, office, hospital air purification (& even UVC/Redox Blood therapy).
For this reason a properly installed/designed UV Sterilizer helps improves a fish’ chances in fighting bacterial diseases or even parasitic diseases such as Ich that UV Sterilization is less effective directly in destroying. Part of the reason for UV Sterilization (which is often missed) is that the UVC radiation which is contained in the unit will break down oxidizers in the water column that would otherwise lower a fish’ immunity (Redox Balance), this aspect is often missed as many only focus on the germicidal/algaecidal properties of UV Sterilizers. Please read this article for more about this subject: “Fish Immune System and UV Sterilization”.
There is a lot of new evidence as to the benefits of UV sterilization for ALL fish, and many myths have been dispelled such as “UV Sterilizers destroying beneficial nitrifying bacteria”. I will try and present material in as readable a format as possible, rather than get down to too much scientific jargon that is difficult for many to understand as many facts can often be presented without every technical term applied (although at times I may have too). I am also constantly researching this subject, so this article may not be the same article in three months, so please read on.
UV Sterilization is also effective for controlling suspended algae (green water) in ponds (along with proper filtration such as Veggie Filters/pressurize filters, please see this article: “A Clear Pond; pond information”)" By Carl Strohmeyer