This morning there was about 1 cm of 'hooch' on top of the food but no frothy layer like there was yesterday. Just imagine the photograph from yesterday without that nice frothy layer on top. I did the same thing as before but this time I put 1/4 cup whole wheat flour and 1/4 cup all purpose flour into the starter along with some warm water.
Since last night the smell has changed from damp flour & water to something else...pleasantly sour and yeasty. I hope the little guys keep partying on.
I've now covered the top of the 'colony' with a cloth snapped into place by a pink rubberband. This is supposed to keep any bugs that want to gatecrash the party uninvited out of there, but who knows what the little buggers can get up to?