Water rising in my second sump pit but not the first
water under a foundation is entirely unpredictable.  its governed by rainfall, tmemperature, soil moisture level, slope, etc.  there is absolutely no reason to worry if the pumps are running properly and doing there job, as there is no way to solve the problem (if there is indeed one) without just randomly trying different changes to any of the above.  this is all predicated on the fact that both pumps have been checked and are working fine.  if not, start there.