How do you winterize this in an area that gets below freezing?

I live in NJ and every fall I shut the flow valve to the filter - I have a waterfall that I let run for a few more weeks until we start getting ice - disconnect the filter from the water line. I then clean it out - in particular the material inside that the good bacteria grows on - and place it in the garage to dry out for a few weeks. I then take it down into the cellar for the winter. I know of no way of winterizing it in place and leaving it ourside for the winter. The water will freeze and I wouldn't want to add even "non-toxic" anti-freeze to any pond equipment. Hope that helps.

I still need a pump for this right?

Yes you do. I use a Tetrapond DHP4200 Debris Handling Pump. Don't use a pump stronger then that.

am going to buy the BP2500. Want to know what inlet and outlet pipes diameter are?

Inlet/Outlet 1.25 in., 1.5 in./1.25 in., 1.5 in.

Does anyone know the size of the large oring included in the filter? I need to replace the original one I have and the kit is $34 for a lot of extra parts I don't need.

I believe I have the same filter problem and the O ring measures 12 inches across. does this sound like it is the right one? I need to replace it also. Where do you order the KIT?

Tetrapond Bio Active Pressure Filter For Ponds Up To 1500

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Description

🌊 Dive into Clarity with TetraPond!

GENEROUS CAPACITY - Designed for ponds up to 1,500 gallons, perfect for your backyard retreat.
CRYSTAL CLEAR WATERS - Transform your pond into a pristine oasis with advanced mechanical filtration.
EFFORTLESS MAINTENANCE - Spend less time cleaning and more time enjoying your pond with a user-friendly backflush valve.
GLOBAL QUALITY ASSURANCE - International standards ensure you receive a top-tier product, no matter where you are.
ECO FRIENDLY BACTERIA BOOST - Harness the power of nature with bio-activators that promote beneficial bacteria growth.

The TetraPond Bio-Active Pressure Filter is engineered for ponds up to 1,500 gallons, offering superior mechanical and biological filtration. Its innovative design features bio-activators that enhance water quality by removing debris and promoting beneficial bacteria. With an easy backflush valve, maintenance is a breeze, making it the ideal choice for pond enthusiasts seeking a clean and vibrant aquatic environment.

Specifications

ASIN	B001QIPL36
ASIN	B001QIPL36
Best Sellers Rank	#239,492 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #332 in Pond Filtration Equipment
Brand Name	Tetra
Customer Reviews	4.0 4.0 out of 5 stars (350)
Date First Available	May 3, 2006
Date First Available	May 3, 2006
Directions	See label for details
Included Components	See Label
Item Dimensions LxWxH	17 x 15.38 x 18 inches
Item Package Dimensions L x W x H	19 x 17 x 15.5 inches
Item Weight	9 pounds
Item model number	AQ-26563
Item model number	AQ-26563
Manufacturer	Tetra
Manufacturer	Tetra
Material	cotton
Model Name	Bio-Active Pressure Filter
Number of Items	1
Product Dimensions	17 x 15.38 x 18 inches; 9 pounds
Size	Ponds Up to 1500 Gallons
Specific Uses for Product	Filter
Style	Ponds Up to 1500 Gallons
Target Audience Keyword	Pond Fish, Goldfish, Koi, fish
Warranty Description	See Label.

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