Oase Vitronic Quartz Sleeves for 11W-55W Models planted Versatile Filtering: Suitable for use

Versatile Filtering: Suitable for use in all types of aquariums without raising phosphate levels

Dosage: 5 mL per 20 L of water

Filter Circulation: 460 L/h (121 US Gal/h)

You can potentially have a lot of NH4 in a pond but depending on the temperature and pH your fish could be OK

Oase Vitronic Quartz Sleeves for 11W-55W Models planted Versatile Filtering: Suitable for useThe Oase Vitronic Quartz Sleeves are essential replacement components designed to protect the UV lamps in your pond filtration system. Crafted to precise specifications, these quartz sleeves maintain optimal lamp efficiency by shielding against water, ensuring that your UV light penetrates the water effectively to control harmful microorganisms. It is crucial to consult your manual to verify compatibility with your existing equipment, as these sleeves