why is sump surging?

zanoshanox

Active Member
I dont know why it is?
I have a AGA RR 65 and AGA model 1 sump...when they water comes down into the sump it surges...like it trickles down over where the sponge is...and then every 5 or 6 seconds it has a huge surge of water....When this happens it kind of spills out over the top....why is it doing this? how do i fix it?
 
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