after speaking to bros mengnan_neo and mini reefer , i decided to go bare bottom but yet i hated the glass look, so decided to glue coral chips onto white acrylic boards to be used as "sandbed"
went to buy acrylic sheets , coral chips and epoxy
1 sheet done, 3 more to go , by the way epoxy putty fail in this attempt, using normal 2 part epoxy is so much easier