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#34
02-25-2007, 08:41 PM
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That's exactly what I'm talking about... Even with 1/2" glass I'd be concerned - with such a short length of plumbing 'feeding' the pump - there's going to be a significant transfer of vibes/resonance from the pump to the bulkhead (thus to the glass). Temporarily plumb it in - fill the tank and run it - put your hand on the pane that feeds, and on the pump... You'll feel the vibration through both.
When you've got a couple feet (like often seen on big tanks) between the bulkhead and pump - that few feet of pvc acts as a vibration isolator; but in your setup there's nothing really there to isolate - you've got less than 6" which isn't enough 'free space' to have the same effect... I did the same as you have on my 7g bf even with careful plumbing of the closed loop - the vibration of the mag 3 alone was enough to snap the back glass corner to corner. A small hunk of flex between the 90 and the union or between the union and the pump would go a long way. Just my .02, not trying to criticize, just pointing out something I've learned in the past.
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