so to start with , bubbles made me panic at first but got over it
definately cleans better like bird poo snail trails and ll them stuborn marks on white frames come off a lot easier.
as for the water running off the glass faster, didnt see it at all, but towards end of the day when tank was nearly empty had more bubbles and glass seemed to sheet a lot more, think it was more concentrated towards bottom when not much water left. will put extra in tonight as i was quite conservative