"Directions: Although it is pre-washed, because Flourite® is a natural product, it may become dusty in transit and require rinsing before use to remove any residual dust.
NOTE: The specialized mesh bottom of the 3.5 kg size allows it to be rinsed right in the bag."
TIPS: When adding water to aquarium, fill slowly to avoid disturbing Flourite® substrate bed. Place a bowl in the aquarium and add water directly to the bowl, allowing water to overflow softly on to the gravel bed. Initial cloudiness is normal. To remove cloudiness, use mechanical filtration (such as filter floss). Clarity™ clearing."
Make sure you do that bolded part. Don't over stir it while cleaning, it's self-defeating. The more you agitate it, the more the clay breaks down and you end up washing most of it down the driveway. The clay, if filled slowly enough will absorb water and weight and that reduces cloudiness. The faster you fill it the longer it takes to clear.
If nobody came back from the future to stop you, it wasn't that bad of a decision.