Auto-clean design - hand squeeze cleaning structure.Queeze out the dirtfrom the sponges by squeezing andback flush to clean-out the dirt. Easy maintain.
Fully sealed designit's allowed to place the productlower than waterlevel.
Build-in UVC lamp can kill algae, virus and harmfulbacterium in the water .
Nitrate, phosphate and any unnecessary nutrient in thewater may be degraded by multiple bio filter materialsincluded.