Tropical Fish Keeping - Aquarium fish care and resources

Tropical Fish Keeping - Aquarium fish care and resources (http://www.tropicalfishkeeping.com/)
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-   -   Juwel pump 400 airline input at base? (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/juwel-pump-400-airline-input-base-29702/)

willieturnip 09-27-2009 04:37 PM

Juwel pump 400 airline input at base?
 
I was just tinkering away as you do and noticed that on the black adaptor that twists onto my juwel pump 400 there is an input for airline tube.

Any ideas what it's for?

I tried adding a powered and passive air source too it with no real results.

It's blocked up with a removable rubber cork in the stock configuration.


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