terrypin
New Member
Hi I have a all pond solutions ef100 filter for my 150litre tank and to improve filtration I have fitted the 1.2l sponge cannister. I have noticed the flow has decreased and at the moment I am having to clean the sponges at least weekly but even then the flow has reduced to a trickle by the third day. I do 20% water changes every other day. Water looks clear and tests great. I am just concerned why the flow is so reduced.
