First Sump Based Tank Recommendations

Hi All,

I’ve been reefing for ~5 years now but my only experience has been a HOB 125G long and a 26g AIO tank. The 26g is up and running but I want to convert it into my frag/quarantine tank.

Any recommendations for something in the size range of 75-100g system (thinking display size of 55-75) with maximum length compared to depth or height? Trying to keep the tank, stand, & sump under 3k new or 1.5k used.

Thanks!