The transparent window plant shelf is made using acrylic plastic (also known as plexiglass) and is 100% safe for fish, plants, and people.
How do I install the plant shelf?
The plexiglass shelf includes two sturdy suction cups that are needed to adhere the ledge to your window, wall or aquarium. Clean both the surface and the suction cup with alcohol and a microfiber cloth and allow it to dry. The sucker pads are concave and when pressed against the smooth surface, air is forced out creating a vacuum. Properly cleaning the surface and cups prevents breaking the seal to make sure the ledge stays in place. You should burp the suction cups every 3 months by firmly pressing them against the surface; this eliminates air that may have seeped in. If placed in direct sunlight, suction cups may weaken and need to be replaced every 6 to 12 months depending on the weight of the displayed objects.
Transparent Window Shelf Double Veg Ledge Suction Cup Window Shelf 7.75x2.75 Inches Crystal Acrylic Ledge for Plants with 2 Suction Cups Firmly Hold Your Planter pots B0899QSYZ9