Pep;
Your water temperature is a little on the high side (calculates to 78F) and the finished dough temperature is also a little on the high side, calculating out at 86F. From what you have described, it looks like your dough is getting about 2.5-hours of fermentation time before it goes to the cooler as a flattened dough skin, which I’d estimate probably takes about another 45-minutes, or so, to cool down to 45F/7.3C at which temperature the dough stabilizes with regard to fermentation. A strong flour, with upwards of 13% protein content, should be able to tolerate this king of fermentation without much trouble (providing your yeast level is within the following range (1% for compressed yeast, or 0.5% for active dry yeast, or 0.375% for instant dry yeast). Those percentages are based on the total flour weight. With that said, if your yeast level looks reasonable, I would conclude that you flour might be too low in protein content, or possibly of poor protein quality. A good way to assess this would be to add 5% vital wheat gluten to the flour. This figures out to 50-grams per kilo of flour, or about 3/4-ounce per pound of flour weight. Be sure to dry blend the gluten into the flour prior to mixing it with the water. And increase the dough absorption by 1.5 times the weight of gluten that you added. For example, if you added 100-grams of vital wheat gluten, you would increase the amount of water added to the dough by 150-grams. This will increase the protein content of the flour by about 3%.
Make your dough and managei it in tyour normal manner, and let us know how it performs for you.
By the way, the reason why the finished dough temperature is higher than the water temperature is due to the friction created in the bowl due to the mixing action of the dough as it scrubs against the side of the bowl. I normally use 70 to 75F water to achieve a finished dough temperature of 80F.
Tom Lehmann/The Dough Doctor