About: http://webisa.webdatacommons.org/220559510

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	You may have already tried this but the PH level of your pool is the most important test as the wrong PH, high or low, can bind up the clorine you have added and make it mostly useless and hence the algea.
http://www.w3.org/ns/prov#wasQuotedFrom	adultmatchdoctor.com