The more water you can get on the glass the quicker you can clean it.
Exactly.
I have a 2 man system both are always on full whack. But recently one of the pumps has become slower, I think I actually got it second hand so no idea how old it is.
When I've had someone working with me it's highlighted what a difference it makes, I'm normally faster but with the weaker flow pump I just can't keep up.
Also I have 8mm on one reel and 6mm on the other. I also noticed when I put that weaker pump on the 8mm and the better one on the 6mm it makes the flow rate much closer. If I do it the other way the flow rate difference is shocking.
I've ordered 2 new pumps now but I'm considering ordering 8mm hose rather than 6 as it does improve flow rate. Downside is 8 is much harder to work with.