Hi all, this morning my ph is down to 6.8 (or there abouts with litmus paper). I found a Wardley's ph tester mid range in a larger centre and am planning on going in there tomorrow to buy it. Just one thing with this ladder; no the bubbles don't merge, they just go up the ladder one after the other but once they reach the top; then they just rise to the top of the water and sail on top for around 20 seconds then pop. Is this what they are suppose to do?
Thanks so much for all the help.