I lucked out and had a couple of 30 gallon tanks given to me free so I have 1.4 in each of those bigger tanks (as well as my 10 gallon tanks with 1.2 or 1.3 in them). Those 30's could likely easily take a 1.5 group but for now the 1.4 groups in them are doing great and pumping out young like crazy.

I pull my weanling ASF's about a week after their eyes are fully open and I observe them eating and using the water bottles. They spend about another week or so in mixed gender 10 gallon tanks before I seperate them by gender into my grow out feeder tanks.