today i finally set up my idea for a home made filter, and after hours everything is fine but i hold my breath. heres a few pics it took me a few days to make and cost me about £35 in materials but it holds the same media and sponge as my 2080 pro 3 eheim. so in theory should be able to filter a tank thats about 250 gallons. thats all good in theory but how do i test this? any ideas guys? the water flow is far faster and has a head of about 8 ft in total with no power loss at all. heres a few pics