At the rate they are growing it shouldn't be more than a week or two tops.
They are finally eating the PE mysis (thank goodness), buying the live mysis was getting expensive. I still use a bristleworm trap to catch amphipods from the other refugium as a treat, but the PE mysis soaked in Selcon is their staple diet now.
As they get larger I am going to be spending my weekends at the beach catching larger prey for them.
Releasing them into the 10 gallon tank won't be too bad but when they are ready to go into my 180, that will be a little stressful.