Ive been mixing my hypo on a 1:3 or a 1:4 pending what im cleaning. Due to only having a 8lpm pump but it has a downstream feature, i prefer when doing slabs etc that i brush it on with a flocked brush that u can pick up for cleaning likes of caravans etc. But ive been using normal squirty which doesnt seem to foam up as much as i was expecting in order for it to sit better. Am i using too little squirty or am i best buying some stronger type of suffactant?