Fluval Flex 9G lid riser

This is a vented lid riser for the Fluval Flex 9G, for saltwater aquariums you need to let the air exchange and gas off so the fluval flex has a very beautiful sleek design it doesn't allow for air exchange. This keeps the sleek design, interlocking panels that fit snuggly and allows for a AI Blade grow 12in light as well for upgrade from factory. I can resize this for other flex aquariums if needed I just need sizes. I hope you enjoy this as much as I have.