We have a 13,000 gallon irregularly shaped pool which has an estimated surface area of 332 sq ft. FWIW, the pump is 1.5 HP, The current Mitra filter is ancient and is specified for 100 sq ft. I see that most filters are specified by sq ft so I'm not sure why the original owner installed such a small filter considering the surface area of the pool. Should I really replace this filter with a 332+ sq ft model or could I get by with a 250 sq ft (eg. Jandy CS250)? Obviously, I've gotten by with the 100 sq ft filter for quite some time (which has forced me to clean the filter quite often, once/week in the summer, once/month otherwise and once every day or two in the event of algae).
The reason I ask, the current filter has a small footprint and is installed in a spot that could only accommodate a similarly sized filter, so the Jandy CS250 would be a good fit, if a 250 sq ft filter is adequate. However, if I should install a larger footprint filter, I could do some additional plumbing to locate it in a different area.
If the Jandy CS250 isn't adequate I was leaning towards the StaRite System 3 SM but the replacement filters seem ridiculously expensive. The features that were most important to me are toolless access to the cartridge-- it seems like many of the larger footprint filters require a wrench (or similar) for access. Also, the cost of the filter and cost of replacement cartridges are important factors. Other than that I'm not sure what makes one filter better than another (considering I would suspect that any filter would be better than the one I currently have).
Thanks for any info