If your talking about a single hose timer for a sprinkler, that screws in between the faucet and the hose, that should work fine as long as you have the flow set and the time to match or exceed your water requirement. If you set the flow low and the time long it leaves more room for error than a short blast on the timer, as well as keep the hose from blowing around with high water spray.
I haven't any idea what you mean by "hose fluctuator"