I always prefill with water.....still does not help
"Bill Stock" wrote in message
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"Lobsang Mack rogers com)" (is.guy atdot wrote in message
...
I have a Fluval 404 and it is to the point where I am afraid to touch it.
Everytime I break it down for maintenance it is a bugger to restart.....My
103 was a dream...never a problem.

I replaced the primer unti and when I try to prime it it still sounds
like it is sucking air. The impeller is spinning but no water is moving.
ANy ideas?

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I've got two 304s, one primes OK, the other I have to pre-fill with tank
water before re-attaching. I don't know if the second one is a lemon or if
the difference in the tubing angles makes a difference. I know they will
BOTH leak if I'm not real careful putting on the tops.