So everything has been going great with the swim spa so far. However, the last 3 times I have tested Ph using a Taylor K-2006 test kit, the ph has read low, like 7.2 but if I re-test it right away with the same water sample it shows 7.6.
The first time I figured I had the wrong number of drops ... the second time I was suspicious ... but just now it has done it a third time.
Could the reagent be going bad? It was a brand new kit last September.
Any suggestions would be great!
Bruce in Sb