Because my phal keikis were looking so robust I decided to transplant them sooner than I anticipated. I hope I haven't done it too early! I covered them with a plastic fruit container that I hold on to in case I want containers to sow seeds and they seem to fit the bill perfectly for the transplants. There is also a sheet of wet kitchen paper to keep the humidity high.
There are two tiny keikis remaining so I'll hang on a while to see what happens; if they grow so much the better