Review on Joshs Frogs Substrate Barrier X18 by Shannon Vegesna

Well it definitely works as a barrier because it doesn't let anything through. Even water. I trimmed it, laid it on top of my drainage layer and decided to test it out before adding the entire substrate. I'm very glad I did it now. After I poured some water over it, it pooled on the barrier and didn't go through. I figured it might be slow dripping so I left it overnight and the next day the water was still up. Unfortunately, this defeats the purpose of use over a drainage layer.