ok got an awesome deal a year ago on this thing and set it up. Now the wp300 is starting to die big surprise lol... Any way it says it's rated 300 gph um 5g a minuet in a 14g nano ?. I do not think its is really that powerful I can not find another pump that size close to that gph anyone know what would be good for that nano? I have ideas but, have a hard time believing the gph. Funny the pump now is like no where to be found.