The first thing I would try to do would be to understand how much water you are losing in your original "bong" setup every week.
I am sure that there could be ways of improving this to effectively reduce the amount being lost to evaporation.
Could you please provide us with a picture/explanation of your current setup. What are you cooling with it? What materials are you using?
Why the need to come up with a solution to offset this loss, when you come perhaps tweak your setup to limit/reduce the amount you are evaporating?
Just a thought
I am sure that there could be ways of improving this to effectively reduce the amount being lost to evaporation.
Could you please provide us with a picture/explanation of your current setup. What are you cooling with it? What materials are you using?
Why the need to come up with a solution to offset this loss, when you come perhaps tweak your setup to limit/reduce the amount you are evaporating?
Just a thought














