Big Sister 3500 A larger version of our popular Little Sister 2000 filter, the Big Sister 3500 is well suited for mid-sized koi ponds. With a larger spraybar and output, the Big Sister is able to handle the higher flow rates larger ponds demand. Constructed of rugged fiberglass, the Big Sister 3500 is built to last a lifetime. The Big Sister 3500’s dual chamber design and standard drain valves make cleaning a snap. Each chamber can be cleaned individually in seconds by shaking the filter media and opening the drain valve. This simple process saves countless hours of cleaning time over a single season!

Inlet	Output	Drain	Max Flow	Dimensions (L x W x H)	Weight	MSRP
1"	3"	1 1/2"	3,000 GPH	46.5" x 29.5" x 22"	85 lbs.	$1,029.95

Features:

• Full Lid

• Dense brushes to trap debris

• Durable biological filter matting

• Includes easy open drain valves

Recommended Pumps/Accessories:
Submersible Pumps	• Pondmaster 1800 • Pondmaster 2400
External Pumps	• Sequence 750 Pump, 3600SEQ12

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