Pond Boss Forums AERATION Systems questions Sweetwater aerator?

Some extra notes about UV light in ponds. Typically UV light rarely penetrates any deeper than 3 ft into natural waters compared to deep penetration in distilled water. The amounts of dissolved organic carbon (DOC) in ponds and lakes strongly absorb UV light in the upper waters and DOCs limit how far the last 1% of the incident UV wavelengths will penetrate - sometimes only as deep as 2"-5". UV penetrates deeper when the water is salty than when it has low salts or minerals. UV rays will breakdown (photolysis) some chromophoric colored compounds into smaller biodegradable compounds and sometimes to even a complete degredation into carbon dioxide. Some non-chromophoric compounds which comprise a lot of the DOCs tend to be more stable, resistant to microbial breakdown, and thus they can accumulate in the presence of UV wavelengths.

Slime on your skin after swimming in ponds can come from numerous sources.