The EC40 filter uses diatomite filter powder (commonly called D.E.). D.E. is the most efficient dirt remover known.
It is normally fed into the system through the skimmer when the filter is initially started; then drained from the
filter when its dirt holding capacity has been reached. Through Perflex’s exclusive “BUMP” action, the D.E.
is periodically regenerated and the filter cycle extended without changing the powder. When the filter
powder is totally used, the “BUMP” action makes it possible to drain the used diatomite without backwashing
or dismantling the filter