Pentair 178563 tank bottom for 100 square foot filtersPentair Genuine OEM Bottom for 100 SQFT Filters, 178563 In stock$34999
Pentair 178563 tank bottom for 100 square foot filters
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Pentair Genuine OEM Bottom for 100 SQFT Filters, 178563

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$34999
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Quick overview

  • Genuine Pentair Factory part 178563, the tank bottom Pentair supplies for 100 square foot filters.
  • Sized at 100 sq ft Tank halves are matched to the filter body, so this one suits the 100 square foot size only.
  • Listed for Predator Carried in the parts list for the American Products Predator cartridge filter.
  • Also EasyClean aboveground Carried in the parts list for the Pentair EasyClean aboveground pool DE filter system.
  • The half that holds pressure The tank bottom takes full system pressure, and it is what crazes and cracks after years of sun and freeze cycles.
  • Confirm the size first A 100 square foot bottom will not mate to a body of another size, so read the label on your filter before ordering.
Full description and specifications ↓

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Product details

The Pentair 178563 is the tank bottom for 100 square foot filters. It is the genuine Pentair part, the lower half of the filter body rather than a repair for a cracked one.

What it fits

Pentair carries it in the parts list for the American Products Predator cartridge filter and for the EasyClean aboveground pool DE filter system. Tank halves are sized to the square footage of the filter, so a 100 square foot bottom will not mate to a body of another size. Read the label on your filter before ordering.

When to replace it

The tank bottom holds full system pressure. Over years of sun, freeze cycles and chemical exposure the plastic crazes and eventually splits, and once the body itself has cracked there is no reliable repair. A cracked filter under pressure is not something to keep running.

Check the simple things first

A tank that weeps at the seam is more often a tired tank o-ring or a clamp band that has lost its grip. Rule those out before committing to a new bottom.

Specifications
Brand Pentair
Manufacturer part number 178563
UPC 788379671501
Type Tank bottom
Filter size 100 sq ft
Fits American Products Predator cartridge filters, Pentair EasyClean aboveground pool DE filter systems
Shipping weight 15 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which filters does it fit?
It is the 100 square foot tank bottom, listed for American Products Predator cartridge filters and for Pentair EasyClean aboveground pool DE filter systems.
Is the top half included?
No. This is the tank bottom on its own.
Is it a genuine Pentair part?
Yes, Pentair part number 178563.
My tank is weeping at the seam. Do I need this?
Not always. A tired tank o-ring or a clamp band that has lost its grip leaks the same way, and both are far cheaper. Replace the bottom when the plastic itself is cracked or crazed.
Ask your own question