I run significantly more snails now than I used to back when the trend was zero nitrates and phosphates at all costs. Back then I had like 4 snails in a 120g. Now that I maintain nitrate at 5-10 ppm and phosphates at .07-.1 I’ve got a large assortment of big trochus, nerite, turbos, and ceriths. No idea how many total snails, but probably in the range of 40-45 total in a Reefer 350. I’ve also got three blue legged hermits because I find them amusing.