Laguna Replacement O-Rings for Laguna PowerClear Multi voyager stream pump only some UVB wavelengths (from

only some UVB wavelengths (from 290-315 nm) help synthesize Vitamin D3

and provides problem-free filter operation

Runs on 46 watts and has a air output of 40 lpm @ 2

AQUA ESSENTIAL water conditioner instantly removes toxic ammonia

Adjustable flow output with attachable spray bar distributes a gentle

Laguna Replacement O-Rings for Laguna PowerClear Multi voyager stream pump only some UVB wavelengths (fromThe Laguna Replacement O Rings are suitable for the Laguna PowerClear Multi 3500 L 1,000 US gal. (PT1817) and the Laguna PowerClear Multi 7000 L 1,500 US gal. (PT1818). There are three O Rings in a pack. Size of O Rings : 1 inch (25 mm).