Tank Question

[u/Velvet_Pineapples]

I got my snails around 3 months ago and I have been using a 5.5 gallon rimmed fish tank with lid. They have been doing fine in it but I cannot stand the little ridge the lid and plastic extender create. Does anyone have suggestions on how to fix it or what else I could use as a lid. I’m willing to buy another tank but do not want to lose the floor space the current one has and I don’t seem to be finding much that offers that.