Hi mate, yes there would be benefits. I use 3 different sources of benificial bacteria in my grow. They promote healthier roots. Beneficial bacteria fight off the nasties that cause root rot the also turn dead root matter into food for your plants, instead of the nasties. They also aid the uptake in macro nutrients. Plenty of reasons to use them! Just make sure your wanter doesn't contain clorine or cloramine as it kills all bacteria good/bad.
Hope this helps and good luck with your grow 🙂