If they go up to 25lb I'd look at the 1.75lb version.
If still waters and carp are your thing though a barbel rod maybe isn't the best tool for the job. I don't know your budget but under £100 try something like:
I'm sure you'll find them under £100.
the feeder version of the barbel rod you've seen.
Too strong aline could damage a rod but only if you don't play the fish correctly. By that I mean within the rods capabilities.
Strong line, say 80lb braid, could snap a rod with a low test curve. Conversely a 3lb test curve rod could easily snap lower breaking strain lines. This doesn't mean you can't use combinations like this. I for example do have some 80lb braid which gets used with 1.75lb test curve rods for predator fishing.
The thing is to make sure that your clutch is set to give line before the rod gives way. You will get used to setting the clutch with experience but a good way to start out is by hooking a heavy object like your tackle bag before casting out. Lift the rod until it gets a healthy bend in it, now set the clutch to give line either before the rod or the line snaps.
This way the rod will absorb the lunges and do it's job but should the fish exert more pressure than that the clutch will kick in and give a little line.