the pump has an intake. it sucks ari in and then pmps it out of a hole or holes that you can attach tubes to to carry the air to the airstones.

it works just like a compressor but wihtout the tank to hold air and it't is desind to be quiet.
Mctuffet Reviewed by Mctuffet on . easiest hydro setup.. for any one i just rad it on here and put it into place like 14 hours ago. you put an air stone at the bottom of pot put and use a fish tank air pump to make it like a bubbler in a hydor setup. this gives more oxygen to the roots to help roots frow faster and increase the nutrient up take by the pland. you get faster growing plants in soil. i used alot of perlite in my soil mix and after 14 hours the thing is super perky. Rating: 5