Project Phoenix

[Madreefer]

Cool build. Really like that rock tower you built.
A question bout your back wall. Is it not right up against the back pane of glass?
If it is just leaning against it than is there a space where stagnant water can sit? I'm just asking cuz there's another member on here that had a piece of acrylic that came away from his back pane and he was positive it was causing water parameter issues.