What's a 50 micron sock?So, if I had to do it all over again, I'd always do a sump. Larger area for bio and mech, larger water volume, more room to hide heaters, airstones, etc , and is by far the easiest and quickest to maintain. And with a 50 micron sock, water quality it's by far the clearest.... housing the largest fish.
I suspect most are over-confident and do not.