ozone also helps to control undesirable microbes. Ozonizers have the added benefit of improving water quality by oxidizing pollutants, and they can also serve to add dissolved oxygen into oxygen-poor environments
i have this Schuran Nitratefilter 100 for $250.00
currently it is under repair by Morgan Reef systems ( distributor in Singapore ) which will take 1-2 weeks
collection will only be after he certifies that it is working without leaks and this unit belongs to me
sms me at 92986245 David