Hey syrrus are you sure there may not have been a second bucket? You know the catch bucket, the one that catches the water run-off? Could the air stones have been in that bucket? That may make sense like a DWC for dirt farmers....(that's funny)

BTW - You are talking about dirt farming in the Hydroponic section.....
Some may be offended............lol
Zandor Reviewed by Zandor 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