Thanks for the replies peeps, my pH is 7.6-7.9 before mixing nutes in, after mixing my nutes it goes down to around 6.8.......
I was under the impression that biobizz worked with water up to a pH of 8 maximum?
Sadly my pH pen was cheap and I never got a reliable reading, always moving up and down and never settling so I never trusted it tbf.....money is a bit of an issue right now so I was thinking of ph drops instead of a pen, I know they aren't as accurate but I thought it would give me a rough enough reading when working with biobizz because it buffers itself..... Am I right in thinking this?
Also, my water is always sat for at least 24hrs before use!
I'll upload some pictures in 5 hours when the girls wake up