How to make inset/recessed lids for acrylic tank

[M3AN ONE]

I need help figuring out how to make inset/recessed lids for acrylic tank

150 Gallon 73x19x25 peninsula with external overflow, recessed lids and feeding ports. | By Aquarium and Terrarium BuilderFacebook

150 Gallon 73x19x25 peninsula with external overflow, recessed lids and feeding ports.

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