last night i spent 3 hours swapping over filters on my 8 week old aquarium to a brand new eheim ecco pro 130 which i receiived mail order from aquatics online 2 days ago. i have had aquariums on and off (mainly on) since i was 12 (35 years) but always used internal filters, the last of which was a dennerle coc400 which ran constantly for 10 years and still works fine. however, last night after painstakingly swapping the cycled media from one of those cheapish chinese external filters off ebay and changing the tubes etc... it was ready to go. i switched it on and sat there gleefully mesmerised just watching, when after 5 minutes i noticed water starting to drip from the safety lock. i switched it off, took off the top, tipped it up and quite a lot of water ran out of every orifice of it. i repeated the process another 3 times with the filter at different heights, but the same thing happened. it is not leaking from the big red canister seal. i just hoped someone here might be able to help me, before i have to go through the rigmorole of having to wrap it up and post it back etc... turning an online bargain into an expensive escapade! cheers and thanx! bazz!