Hi everyone. I have a but if a pH conundrum that I hope I could get some input on here. My tank has been cycling for a while and it's for through the whole Amonia cycle...etc. a few days ago I put the first fish in. Per the Red Sea kit the ph was around 8.2. Two days later the pH is reading peaked at 8.6 this morning and I started dosing a bit of vinegar to bring the ph down. Mind you at this time I am running just water. Same water I am using for changes in my 40 (salinity by Aqua vitro). I also tested my alkalinity and it was below detection level on the Red Sea kit. I only used like .3 ml of titration fluid. Any ideas?