Hey Roger,

 

The Bug Zapper I am using just stuns them instead of fry's them.  Its a Stinger 1/2 Acre Outdoor Insect Killer.

http://www.bicwarehouse.com/stinger-acre-outdoor-insect-killer-fp-15-cr.html?utm_medium=CJ&utm_campaign=2187177&utm_source=Affiliate&aff=cj

The drums are still way thicker than the kiddie pools. I forgot to mention to you 2 other issues. The pool only allows for a gravel bed depth of 8 inches. Which is really not that bad. The other issue I am having is with the pipeing for the bell siphone drain. I put a 90 after the pipeing exits the pool then a 1 inch to 1/2 inch reducer to create back pressure to help the siphone to start. Then I increased the pipeing back to 1 inch and another 90 with about an 10 inch piece of 1 inch to drain back to my pond below. After a few monthe this assembly started to sag causeing issues with the bell siphone working properly. The grow bed would sit with water in it until I was able to go out and correct it. This issue will be fixed by tieing the pipeing assembly up level again. I don't know if the drums are hard to get there in Costa Rica or not but I would use them or something else with more meat to it than the Kiddie pool. I have seen videos on Youtube with people useing the drums and the work very well. Sorry this is so long but I want to give you as much info as possible. I don't want to stop you from trying something that may work for you. God knows I am no genius. I don't always see what others do right off the bat. Sometimes I have to hit that brick wall head on before I get it.

Hi Roger,

  The kiddie pool was a temp deal. It is made of very thin plastic. I knew this when I bought it. The weight of the pea gravel started to bow the sides out. I would use the plastic 55 gal drums. They are made of thicker plastic and make a very nice small system or even a large system if you line them up together. I hope this helps you out.

 

Robert