Uhhh, is this bad?

[Buddyboy]

Sorry to hear about your tank woes fkshiu! Hope your life and your reef are back to normal very soon!

How is the HDPE plastic used? Do you lay it on the bottom of the inside of the tank? Where can I find sheets of this plastic?

Also, what kind of foam should be used? Where can it be purchased? I would imagine this foam would be layed on the outside bottom of the tank?

Best of luck with your tank rebirth!