Ticks in minecraftEdit
A redstone tick is the time for redstone in minecraft. a tick might not mean that much to you but timing is everything in redstone (as well as the actual contraption working). a redstone torch takes 1 tick of delay. so the 5-clocks were 10 ticks in total because they were 5 torches. Note that a tick is the delay between "redstone torch receives power" and "redstone torch turns off". It's the opposite when turning on.
Repeaters can be set to 1,2,3,4 tick(s). One redstone tick = 0.1 seconds.
so when making contraptions in the future remember the 2 main rules for redstone:
timing is everything,
it must work.