All the galacticraft liquids aren't acting like liquids in the sense that you can't swim in them. The underoil and underfuel textures don't work, so you can see clearly under galacticraft liquids. You can't swim in them, you just fall and walk around in them. It just acts as if you're walking anywhere else. The textures are also buggy at the point where it goes down in a slope, it cuts off into the next level. Here's an example with sulphuric acid: This should be fixed so you can swim in liquids and the texture doesn't cut off when going down in a slope.