rabbit gave you some good advice. Finding the leak is usually the most difficult part of repairing the leak. Since you have found it, the temporary fix will probably be tightening the clamps. If that fixes it, don't be happy to let it go at that. Inspect the hose carefully for cracks, especially near the clamps, and especially on the engine side where it sees the most heat. If there are any doubts whatever, replace the hose. It's the cheapest insurance you could have against a hose failure causing an overheat, possibly destroying your engine.
The good news here is that you are keeping an eye on things. If you're not wearing out the hood hinges looking for things going bad, you're asking for trouble. So, wear those hood hinges.