Hi Sean. How are you? I don't like a lot of gravel in my tanks. I just want enough to cover the bottom. Big Boy is going to have a massive fit with me changing his gravel!!! OMG!!! Should be fun!!!! LOL!!!
I am doing great. The new tank is getting closer to being set up. My substrate is on the way. Can't wait tho still not 100% sure what is going in it, too many fish not enought tanks cash......
I would go with 4, that should just cover the bottom.