Anjon Stainless Steel SuperNova Clarifiers are the ideal choice for today's discerning pond owners. Featuring a rugged stainless steel design, these economical ultraviolet purifiers are ideal for residential, commercial and municipal projects. An amazing value, the reflective stainless steel purification chamber boosts effectiveness by 35% compared to inferior plastic units on the market. Available in 40, 55, and 70 watt sizes. Features: Rugged, industrial strength clarifier for residential, commercial, and municipal projects Reflective stainless steel purification chamber boosts effectiveness by 35% Oversized intlet & outlet ports plus 3" diameter housing, produces better flow rates Includes 1" - 1 1/2" stepped inlet & outlet barb fittings 1-1/2" FIPT intlet & outlet "standard schedule 40 PVC fittings" bulb lasts 9,000 hours Available in 40, 55 & 70 watt sizes