Replacing complete cartridge pool filter - help needed

[gbrenham]

I currently have a Hayward Super Star Clear C4000. I can't find specs on it, but would assume the naming conventions hold true and it is 400sq ft. The alternative/newer replacement for that filter is the
Hayward Swimclear Cartridge Filter 425 sqft at $1,179. Really do not want to spend that kind of money!

Is there a better alternative? What if I went with a used Hayward C5025 525sq ft. Does the size matter in regards to pressures? Pool operations?

A picture of the used one in question is attached. Other than checking things like threads and if it leaks, what should I check? It's obviously not currently hooked up, so can't put it under pressure.

 

[mas985]

Bigger is usually always better because it means less time between cleanings.

What is wrong with your current filter?

The used filter looks a little rough. A lot of corrosion on the band. The problem with used filters it is very easy to overlook hairline cracks.

 

[gbrenham]

Bigger is usually always better because it means less time between cleanings.

What is wrong with your current filter?

The used filter looks a little rough. A lot of corrosion on the band. The problem with used filters it is very easy to overlook hairline cracks.

Current filter had the pressure gauge/relief valve strip the internal threads. How this happened, I don't know. Had to improvise and just shut the whole thing off.

 

[mas985]

Can you tap a new larger set of threads and use a bushing for the gauge?