     - The ReefRhythm RR series is our latest line of DC powered protein skimmers. - ReefRhythm RR protein skimmers have space-saving internal pumps, and are designed for in-sump use. - Each ReefRhythm skimmer includes a fully controllable DC pump, with 9 flow speeds and 3 feed timers. You can choose from a 10, 30, or 60 minute feed timer, and the LCD displays the time remaining before the pump re-activates. - The RR skimmers have a unique octagonal base that tapers into a circular column. The octagonal base maximizes internal space while the upper cylinder concentrates fish waste for efficient removal. - Each DC pump is paired with a needle wheel impeller and an air silencer for quiet operation. - The collection cup includes a stopper for standalone use, and a drain hose so it can be paired with a larger collection chamber. - ReefRhythm skimmers are available in 4 sizes, covering tanks from 75 gallons all the way up to 850 gallons. - Skimmer Size - Tank Volume (Gallons) Heavy bioload-Light bioload - Ideal Water Level - Max Air Intake (gph) - Max Pump Flow Rate (gph) - Max Power (W) - Dimensions L x W x H (inches) - RR-150 - 75-150 Gal - 6.5” - 80 - 300 - 20W - 5.9 x 5.1 x 20.5 - RR-250 - 150-250 Gal - 6.75” - 150 - 550 - 25W - 7.9 x 5.9 x 21.25 - RR-400 - 250-400 Gal - 8.75” - 210 - 800 - 45W - 9.8 x 7.5 x 23.25 - RR-850 - 400-850 Gal - 9” - 450 - 1600 - 68W - 11.25 x 9 x 25.25 - Free Shipping over $49 - Free Overnight over $399 - 90 Day Returns w/ Reef Guard - Expert Customer Support - Add Merch to your box ships FREEView all- 
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