What is the thickness, that may be the difference between the 2 options. As well as the type of way they are joined together.
Sorry I don't recall the correct terms for the process, but some companies basically glue them and others use special way to bond them basically into a solid piece.(chemically? I don't know about that part, lol)
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 New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?
 Start here - Aquarium Advice Article
https://www.aquariumadvice.com/guide...ater-aquarium/
FW Favorites right now Clown Loaches, any shrimp - SW Vase Red Mangroves
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