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Specifications：
ViaAqua® In-Sump Skimmer 2™ incorporates needle wheel technology with an exclusive U/D force through mixing tower for added contact time. The needle wheel and venturi intake tube create micro bubbles, which provide a tremendous amount of surface area to attract organics. The U/D mixing tower adds an additional 28” of contact time (14” up, 14” down). This contact time allows more time for organics to adhere to the surface of the micro bubbles. This unique feature provides the contact time of skimmers twice as large. Designed to be easy to set up and easy to regulate. Each unit comes with water level control and air volume control to ensure the ability to precisely tune the skimmer for maximum efficiency for any aquatic environment. The combination of design and engineering has created one of most efficient and affordable protein skimmers in the aquarium hobby.. -
Models：
Item No Dimension Wattage Capacity UPC No. 
SK 200 NW 13” x 8.5” x 18” 37 watt up to 150 gal. 006903729727 
SK 388 NW 14.5” x 9” x 18.5” 47 watt up to 250 gal. 006903729734 -
Parts：
- Collection Cup Lid
- Collection Cup
- Discharge Sponge
- Discharge Compression Nut
- Variable Discharge Tube
- Main Body
- Base
- Force Through U/D Mixing Tower
- Air Control Valve
- Intake Compression Nut
- Venturi Intake Tube
- Pump
- Venturi Tubing Adapter
- Needle Wheel Impeller
- Ceramic Shaft
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Installation：
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Maintenance：
MAIN BODY
- Disconnect the pump from the electrical outlet.
- Remove the skimmer from the sump.
- Remove all the water from the skimmer body.
- Disconnect the U/D mixing chamber.
- Remove the pump from the skimmer body.
- Fill unit with water and add a small amount of bleach. Approximately one capful.
- Let stand for one hour.
- Rinse unit well and refill with fresh water.
- Add a water conditioner that removes chlorine to the water and let stand for one hour.
- Rinse well, reassemble and install.
WATER PUMP AND VENTURI
- Disconnect the pump from the electrical outlet.
- Remove the skimmer from the sump.
- Remove all the water from the skimmer’s main body.
- Remove the venturi intake tube and air control valve. This will run water through the unit so that water runs through air control valve remove all salt deposits.
- Remove the impeller well cover.
- Remove the impeller and the shaft, clean well. A small amount of vinegar should be used to clean the ceramic shaft. Soak shaft in a 1 part vinegar to 3 parts water soluation for 30 minutes.
- Clean the inside of the impeller well with a small brush.
- Reassemble and install the unit back into the sump.
DISCHARGE SPONGE
If sponge clogs, the water level in the skimmer will increase and cause the skimmer to collect wetter foam/water in the collection cup. In a new tank it may be necessary to clean the sponge every week. Replace sponge as needed.COLLECTION CUP
Clean as often as needed. At times the collection cup may have to be cleaned everyday. Keeping the collection cup clean ensures a properly operating skimmer.
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