I bid on ebay for a 'python ulti-vac pond mantainace system ' today ,anyone use this ? ive been in serious need of a python for a long time ,hoping I didnt 'overkill' though.I want to use for my indoor pond as well as a couple big aquariums that are hard to gravel vacuum (due to my stupid impractical placement).im tired of hauling 5g buckets (sorry if I posted in the wrong place).Any comments?Is this a good investment?