Neptunian Cube Aquarium Lids & Covers

A DIY (do it yourself) lid is difficult to assemble, is flimsy / weak in construction, does not fit precisely around most equipment (leaves large gaps), and makes the top of your tank look cheap. Glass lids are heavy and difficult to move, collect condensation and salt creep that blocks light and constantly needs to be cleaned, and can easily shatter if accidentally dropped or stepped on. Acrylic lids bow up at the corners and cloud / haze over the course of weeks or months, leaving an ugly and unprofessional look as well as large gaps for fish to jump through. Custom polycarbonate screened aquarium covers are designed according to the exact measurements we've used to create hundreds of other lids for the same tank model. It will not only fit perfectly with no gaps, but will also have close to 0 condensation due to being screened, have all cutouts like Feed Doors, Light Cutouts, and Auto Feeder Cutouts precisely fit to your exact specifications that you configure on the Product Page, be warrantied for 3-5 years against bowing, clouding, and hazing, and keep a clean and professional look to add to the aesthetics of your aquarium.

Yes! We do custom builds for custom tanks with unique shapes / measurements every day of the week. Our custom lids are tailored to fit all tank types, including rimless, and uniquely shaped aquariums. If you have a custom or uniquely shaped tank, then on our homepage, scroll to the bottom and fill out our "Request a Quote" Form.

We use high-quality polycarbonate and custom-made woven mesh screens, ensuring multi-year use, minimal maintenance, maximum light penetration, and complete coverage from jumpers escaping. Most clients think they look pretty cool too!

If you have a tank located on this page, then click on the tank model and size that corresponds with yours, and click on the options that you'd like on the next page. If you have a tank not located on this page, then type in your tank brand and size into the search bar at the top of the page. If you have a custom tank, simply provide your tank details in the "Request a Quote" form at the bottom of the homepage, and our team will design an aquarium lid specifically for your setup. Feel free to call or text the number at the top of the page, or click the orange live chat button in the bottom right to connect with one of our expert lid designers if you need any help.

Our custom polycarbonate aquarium lids come with a clear polycarbonate frame that has screen inside all openings of the frame to keep fish in and condensation low. To reduce evaporation, choose our Evaporation Cover option which is a solid piece of polycarbonate material that covers the screened portion of the lid to stop ~60-70% of water evaporation from your aquarium. This greatly helps reduce the need for frequent top offs and maintains stable water conditions.