So, a bigggggggg thank you to whoever the person was that came up with this wonderful invention that saved a lot of back breaking work, and time in keeping our aquariums sparkly clean.. been there done that with the bucket thing..lol.. my python is about 50 feet long or so, the only problem i have noticed is that recently it seems to be sucking water slow..and when i do changes on the 125 it seems like it takes forever to drain 60-75% but a lot faster to fill.. is it just my perception of how slow it takes to even get about 3" of water out of these six footers? or am i having a problem with the hose? how long does it take to normally do a 75% water drain for those who have monster tanks? i am concerned i am running too much water from the tap to create the suction.. suggestions? experiences? thanks much!!!