I just got the Hanna tester reagent in and it does indicate higher. Went to my LFS had them test and it was .10 using Red Sea tester. I tested with my Hanna H784 and it indicated .87. I also had the LFS test my RO water which came back fine. Did a 6 gallon water change retested after an hour and now the Hanna tester indicates .88. So I am at a loss.along with the full tank pic can you take a new reading of the ammonia tube and comparison card and post those so we can tie it all in