Taking that into consideration
What do you mean "outer silicone beads"?? There were some excess silicone on the outside when two glasses were attached which I removed with the razor. (Not really sure what you mean)
Might keep this for plantation and build a new one since its difficult to get specific aquatic plants in my country, its a shipment once a month or two months and they are expensive (13 USD for Dwarf Baby Tears on 5x3in mat) and there's no guarantee the plant you want is in the shipment. You can ask a store to order it but it a lot more expensive.
Might build another, have to check my budget first, 10mm (3/8')