Ensuring the right water level in your dab rig is akin to using a bong effectively. It's essential that when using a bong, the water should not rise into the mouthpiece. If it does, it's advisable to pour some water out. The water in your rig should be enough to create bubbles without the risk of splashing.
The water in your dab rig acts as filtration and enhances the vaping experience for your lungs. However, it can also dilute the flavor of your smoke. The greater the amount of water in the dab rig, the more water the vapor has to pass through. Additionally, your concentrate can become diluted in the water during dabbing. Therefore, it's best to avoid adding excessive water to your dab rig if you want to fully savor the flavor of your concentrate.