What intake comes with Eheim Wet/Dry
- Thread starter BumBumBee
- Start date
It has an inverted U-shaped tube, much like an ordinary canister intake. There is no overflow-type intake.
Jim
Jim
I have an Eheim 2229 wet/dry. It operates just like a regular canister with a u-tube. It's a closed system with its own pump/impeller. It has a funky sponge floaty thing that allows air to bleed into the canister as it alternately fills and empties. I've taken it apart and still am not completely sure exactly how it works. It just does.
Actually, Jeff, while you're mostly correct, the 2229 isn't a closed system like most canisters, in the sense that it's closed to the atmosphere. That little third tube, the breather tube, is open to the air (to allow air intake while the filter fills and empties). If it's dropped below the tank level, it will drain the tank to that level. Try it... you'll see. (Don't really do this unless you want water on your floor.)
I agree that the 2229 is rather mysterious in how exactly it works. I suspect it constantly drains thru the intake tube at some rather slow rate. When the canister fills, it overflows into the tube with that foam float. When the float chamber is completely full, the pump is activated and pumps water out of the canister faster than it can be let in. It is a very ingenious design, no?
Jim
I agree that the 2229 is rather mysterious in how exactly it works. I suspect it constantly drains thru the intake tube at some rather slow rate. When the canister fills, it overflows into the tube with that foam float. When the float chamber is completely full, the pump is activated and pumps water out of the canister faster than it can be let in. It is a very ingenious design, no?
Jim