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If you use less pipes, the pressure is increased and the little rubber stopper on the end gets blown out. Well, mine did

Don't tell em it's second hand :wink:

I have a Koralia Nano on my 125l and ideally need to upgrade it, probably only to a Koralia 1. That said, it depends where you point it, if it's pointed at the substrate, it'll blow everywhere, yet if it's pointing parallel with the water surface it doesn't quite reach the end of the 3footer...

If your Eheim hose goes over your glassware then the outer diameter of the glassware is the same as the inner diameter of the hose, meaning the inner diameter of the glassware is a couple of mm less than the Eheim, probably more than 10% less diameter

+1 :thumbup:

Mine is brilliant, like George already said, it is silent. It provides good flow and has a low power usage :thumbup:

Set my new filter up these evening, and I must say what a great piece of kit! Solid, well made, very quiet (but not silent like some reviews said :wink: ), child's play to set up. The primer button is much more convincing than the weedy stick thin plunger on my rickety old Fluval. One very...