Glass Rigs are for legal use only for novelty collectibles. Please observe and obey all laws relating to these products.
The diffusion pump is ultimately a recycler as well it requires a lot of water to pump back and forth. It was a learning curve at first but as soon as I put a recycler ash catcher on top it actually cool the smoke down by 30% making my hits cooler without ice or glycerin. Overall highly recommend and I am surprise their are no YouTube videos about this? I want to do my own review on it.