Rock in tank but no substitute

[Mr.Schertz]

So I'm picking up a brand new 90 gallon tank tomorrow. I plan on ordering some bulk dry rock from Florida. Its going to be a fish only tank,but I don't want to add any substrate for easy of cleaning. What are my options to secure the rock in place and not crack the bottom glass? Black plexi glass?

[aquasport24]

A lot people use HDPE board, you can get them From Regal Plastic.

[aquasport24]

You can also using some type of epoxy and sand to cover the board. You'll get the natural looks and easy cleaning at the same time.

[Mr.Schertz]

whats hdpe?

[Mr.Schertz]

ok i looked up hdpe board but its white, i wanted a black bottom.

[aquasport24]

Heavy duty plastic board, the same stuff as a cutting board.

[aquasport24]

They with different colors

[aquasport24]

They have different colors

[aquasport24]

Make sure to have a 1/4 gap all around, and then fill it with black silicone.

[Mr.Schertz]

Do you think it's safe to go bare bottom? Maybe just paint the underside of the tank?