Tank lid questions

[bues0022]

Good evening all! I just made new light hangers so I no longer have them braced on the tank. Tank is a 3’x3’ cube. So now I need new tank lids (I want them split in half like they already are). My biggest problem is my return comes over the top of the back. Does anyone have any slick ideas for how to make a robust lid but still have a cut out for the return flow? I’d add pics but I’m having troubles at the moment. 

[WheresTheReef]

Maybe something like these would work.

 

https://www.bulkreefsupply.com/jumpguard-multico-cut-out-accessory-set-d-d-the-aquarium-solution.html?queryID=e710d08ed38b82b3420340870c855dd1&objectID=15286&indexName=brs_prod_m2_default_products

 

https://www.bulkreefsupply.com/jumpguard-flexico-cut-out-accessory-set-d-d-the-aquarium-solution.html?queryID=e710d08ed38b82b3420340870c855dd1&objectID=15285&indexName=brs_prod_m2_default_products

 

or combine these with standard big box store frame corners

 

https://www.bulkreefsupply.com/rimless-screen-top-frame-corners-niche3d.html?queryID=18ab0ee67e8eb309ff2f6c906ec185bf&objectID=10461&indexName=brs_prod_m2_default_products

[Squishie89]

You could put this where your return goes

https://www.bulkreefsupply.com/jumpguard-feeding-portal-d-d-the-aquarium-solution.html?queryID=2259b8fc8d6338c9d212359e188ae1b8&objectID=15281&indexName=brs_prod_m2_default_products

[DaJMasta]

Not exactly a match for the finish, but if you have a 3d printer, I made some internal angles for the BRS screen profiles too: https://www.thingiverse.com/thing:5397399

 

When dealing with an internal corner using these connectors (or commercial ones) if the length of the connector that fits into the aluminum extrusion is more than half the length of the section, they will collide and not fit all the way.  You can trim them with larger wire cutters (or similar), but they may need a little glue to really fit well.  I think Red Sea makes some cutouts of preset sizes that are all one piece, so you don't need to worry about how much the adapters fit into an extrusion, but they may not be compatible with the BRS screen extrusions.