You need to run the pump at least 30 minutes prior to testing and 30 minutes after adding any chemicals. You also need to run the pump so that the debris in the water is filtered out. Usually 4-6 hours of pump run time daily is a good place to start.
Sounds like you may need to have a GFCI outlet installed closer to the pool.
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!