Originally Posted by
wfhoffmaniii
In my experience going through the filter adds another 2 inches of head when clean to 6 or more inches of head when dirty (just before weekly cleaning). Generally you can flow around 2,000 GpH through each filter. Depending on the pump flow/head specifications you might be able to handle 4 s/g filters. That pump will still flow 8K GpH at 5 or 6 feet of total head, both static and dynamic included. Also keep in mind that the static head from the s/g filter is only added once while the dynamic head for each filter has to be multiplied by the number of filters installed (total number of elbows, total length of pipe, etc).
Bill