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Check out this guide.
Replacement Filter Cartridges
Replacement cartridges for the Waterway® Clearwater II above-ground filter line, from 75 to 200 sq ft. Match your tank size in the chart below the products — the models share a family look but each uses a different element.
No cartridges match these filters.
XLS-802 1Pack
In stockReplaces CX1200RE, PA-120, C-8412
XLS-800 1Pack
In stockReplaces CX900RE, 817-100, PA-90, C-8409
XLS-822 1Pack
In stockReplaces CC1500, CS150, Clearwater II 150, ProClean Plus 150, PWWCT150, C-8414, FC-1287
XLS-801 1Pack
In stockReplaces CX760RE, PA-76, C-8411
XLS-847 1Pack
In stockReplaces C-8419, PWWCT-200, PXST175
Excel Filters makes direct-fit replacement cartridges for every Waterway® Clearwater II filter size — 75, 100, 125, 150, and 200 sq ft. Match the size on your tank label or the 817-series part number on your current cartridge for OEM-spec fit at factory-direct pricing.
| Housing model | Waterway element | Unicel | Excel replacement |
|---|---|---|---|
| Clearwater II 75 | 817-4075 | C-8411 | XLS-801 |
| Clearwater II 100 | — | C-8409 | XLS-800 (90 sq ft) |
| Clearwater II 125 | 817-0125N | C-8412 | XLS-802 |
| Clearwater II 150 | 817-0150N | C-8414 | XLS-822 |
| Clearwater II 200 | 817-0200N | C-8419 | XLS-847 |
The size (75–200) is printed on the tank label. If it is missing, read the 817-series part number on your current cartridge's end cap, or measure the cartridge length — each size uses a different-length element.
Waterway used letter suffixes to distinguish element versions with different end caps. The Clearwater II line uses the N versions — if your cartridge shows a P suffix, it belongs to the ProClean line instead (see the ProClean collection below).
No. Excel Filters cartridges are aftermarket replacements manufactured in the USA to OEM dimensions. They are not affiliated with or endorsed by Waterway.
