Just done a routine water change and filter/tank clean and it took me 2-3 hours I'm after a way to cut this time by half. I have a 250ltr planted tank with a tetratec ex1200 which works well but the hoses etc need cleaning every 2 weeks otherwise the filter slows right down. I would like to do a 50% water change every weekend to keep my Discus happy but its just such hard work using a bucket. Does anyone know of a powered external pump I can connect a hose to ither end to siphon water out and in to the tank, Ideally something I can DIY my gravel cleaner to 1 end. The pump can't be to noisey and adjustable flow rate would be nice plus obviously plugs into mains somehow.