What's the correlation between the feeding ratio and the starter peak time? For example, if I feed at 1:2:2 and it takes 6 hours to peak, would it take 12 hours if I feed at 1:4:4?
Also, can I assume same max growth in both cases? So, for example, if at 1:2:2 the peak is 3X in volume, then that would ultimately be the peak at 1:4:4 as well?
No to 12hrs because growth is exponential.
If 1:2:2 takes 6 hours then 1:4:4 should take about 8 hours or so.
I have a calculator for this here... http://www.thefreshloaf.com/node/54731/lab-calculator
It is based on the exponential growth phase and doesn't take into account a number of factors but it seems quite accurate, at least with my starter.