What it do bro.. I'm actually gettin at ya here about a question you posted in another thread about your pump. Well I actually wrote some shit up in that one but somehow it never posted and got lost.
Broke down version:
So I don't have experience with hydro per say but I am using an 80gph pump to feed my ladies and that is more than I needed, so I use a 64 cent valve to regulate the pressure, it will also depend on your lines and size tubing but since your main concern is being too strong I'd check it out. Did your pump come with a valve? Quite a few I've seen actually come with one but if not they're pretty cheap..