I have picked up with a tank an internal filter all it says on the filter is interpet bio, I have managed to find one on ebay (interpet bio 50, does upto 200l tank). Internet searching only comes up with the filter pads, no instructions how they work and I have no idea which model I have (50 or 250). I have figured out how it fits together and got it working (blooming terriffic!!) but I cannot get the motor section out of the casing to see if the impeller needs cleaning. Does anyone have one of these filters, if so how do you get the motor bit out?
Many thanks
Many thanks
