Listen to the chicks
In this fast moving industry you only have 35 days and if an error is made in the first few days it can be difficult if not impossible to catch up! Listen to what the chicks are telling you! Are they too hot or cold or just right? How is their drinking behaviour? Are they getting enough water (time spent at the nipples) - check by pushing some nipples at the front middle and end of each line. Better to purchase a water meter stick, to measure the flow rate per minute along the line. This should be done 4 times daily and written where it is close to the water lines along the inside front of the house