Heh; Mark walked right in and got it on within seconds. But he had to disconnect the hoses to do it.. I could have done that, but I was so happy about how good I had them on.. lol.
Then he goes "oh, these things shut off the water (meaning the white valves on the lines.) I said oh, maybe if I knew that, I would not have gotten drenched, lol!
I love the filter itself and how it works; they make a tank clearer than drinking water. My friend uses one on her 225g tank, and I am always in wonder as to how clear ir stays with the messy, piggy Oscars in that tank. Ours are pigs also, but this thing kicks! But my "hang-on-backs" are so much easier to deal with.. then again they are a pup to get going after a power outage.