Custom-cut polycarbonate lid for the 50 Gallon Lagoon AIO. Covers the main display from the front glass to the filter wall with a precise, gap-free fit — no more jumpers on the floor. Translucent mesh screen keeps light penetration high while keeping fish in, and the covered feed port with feed cup lets you feed without removing the lid.

Why polycarbonate instead of glass? It's lighter, won't shatter, and won't warp or yellow like cheap acrylic lids.