Hey guys! I just joined the forum, and i need your help. I bought my first house last may. Come to find out, my garage flooring was from the foundation slab and has no surface done to it. They basically just built a garage on top of it. My plan is to epoxy coat the floor. Last weekend I tried cleaning the floor with pressure washer, brush it with commercial brushes from home depot. I tried to resurface it with quikrete concrete. Concrete 1 which is regular concrete, I mixed it but there's a lot of gravel at the bottom . The consistency is just not right and every time I poured it to the floor, there's just a bunch of stones and gravels. Concrete 2 which is the resurface has better consistency but still have a lot of gravel and rock after I poured it down the floor Concrete 3 which was crack resistant needed up having the same results. I spent almost 200 bucks and have no results. My question is What type of concrete shld I use? Or shld I just use cement? What do I need to do to fix this issues besides hiring a pro? Thanks.