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    Replace FNS 48 lid with FNS 60 lid?

    I need new grids and a new manifold for my current filter. The filter is currently a Pentair 48 FNS plus. Would it be possible to buy a new stand pipe ($50), new lid ($200) and 60 sqft grid pack to convert my 48FNS plus to 60FNS plus? Has anyone tried this? Seems like it may work and it's...