I have have 60 in my 55 for over a year with no problems. I have a lot of fish and a SFE. 1 lb per gal
is plenty it will be a LR
tank and not a fish tank if he keeps adding rock.
I also have 130 in my 125 with a ton of fish and corals and never had any issues with amm, nitrite or nitrate in over 2 years.
Most of the guys in my reef club all run 1-1.5 lbs per gal
. It all depends on the look your going for. I like a lot of swimming room for the fish so I run what IMO
is the minimum for good filtration.