If you heard a peep, don't bother candling. Peeps are an even better indicator.
The time to candle is at about 10 days. Developing chicks are obvious and rejects can be removed. From this group, most everything will hatch if conditions are correct. Sounds like your temps are too low. Live chicks should have hatched by now if the temp was correct. You may have a bad thermometer or two.
The time to candle is at about 10 days. Developing chicks are obvious and rejects can be removed. From this group, most everything will hatch if conditions are correct. Sounds like your temps are too low. Live chicks should have hatched by now if the temp was correct. You may have a bad thermometer or two.