air pump with an inlet

[dolfanjack]

Does anybody make an air pump with an inlet I can connect an airline tube to? I would like to draw air from outside into my aquarium through an air stone to raise my ph. Can't seem to find one anywhere. Thanks in advance, Jack

[seabass]

I'm not sure.  However, there are a few pumps (IDK, maybe for ponds and/or fountains) that can be used outside.  I imagine that you could put one of these outside and run the outlet tubing into your house.

[Tamberav]

Toms aqualifter? At least I think it can pull just air... but they dont make them anymore but sounds like they might be coming back

 

http://www.cpraquaticinc.com/blog-roll/2021/11/3/aqualifter

 

 

Also if you put a pump with a venturi in your sump, you could pull air that way I am pretty sure. Like a Newa pump. Hook an air line to the top of the pump (can see it in the pic) 

 

https://intankaquatics.com/newa-maxi-multi-use-powerhead-and-pump-mp1200-295-gph/

[dolfanjack]

Thanks, Tamberav, I use a skilter with an air stone as my skimmer, so an air pump with an inlet is what I'm looking for.