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Does anyone have any experience of combining 6pc plates in a 4 "column (or larger) with about 50-60cm 4" pipe (or larger) containing SPP filling above to get as neutral as possible in the least possible height?
According to some people SPP is the ultimate filling material. Is it really in 4" columns and larger?
What size of the SPP would be optimal for 4 "columns and larger to maintain flows?
And how does this affect the plates feature and column flow-product per hour, etc.?
It is easy to clean by back-flushing the same way as the plates, which is one of the advantages.