I can't tell exactly what's going on in the picture because I'm viewing it on my phone with a lot of glare, but I'm assuming it's very cloudy. It will eventually settle. Run your filter to help clear it up but be sure to clean the filter media once it's cleared up. There will probably be a lot of gunk in the filter. Next time, add the new substrate then place the plastic bags that it came in on top of the substrate and pour the water into the tank onto the bags then remove the bags when you're done. That should help prevent some clouding.