Here's what I use, a silicon place mat:

https://imgur.com/a/ITQoUXW

https://www.amazon.com/gp/product/B07Q1X7TKC/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

I only installed it after my Batch 1 tank cracked back in early-mid December (didn't leak), and it hasn't seemed to get worse.

As an update, as of this week, Anova hasn't released an updated tank yet. So if you get a replacement, it is the same as the original.