reefer 750xxl

Let’s start with a little history: Started a RedSea Reefer 750 in 2019. The original goal was to keep a mixed reef with a colorful mix of Acans, Zoas, Hammers and some SPS. The tank started with dry Marco rock that was cured in my garage using a brute trash can and ammonia in a bottle. The...

My new reefer 750xxl is arriving in two days and I have been considering the idea of adding an ABS sheet to the bottom of the glass to help keep it from cracking or scratching from the rocks. Is this necessary if I'm using sand as well? I know BRS has an ABS liner on their 160 but I'm not sure...