Thx...I will add rye to the bread flour one...and try the panty hose
It needs to breathe. Anything like it will do. Pantyhose is just perfect IMHO as would be a cheese cloth cover. It just needs to breathe freely.
The only drawback to rye is the yeast get used to it and the other beasties so initial pop is a tad slower even though your starter is like the stay puff monster. They need to figure out this new stuff is food but when they do... it proofs big time.
A cheat is to when feeding just mix in some of whatever flour you will be using it for and enough of the beasties will be happy almost immediately.