I've agreed with JD on everything he's ever written still do! But one thing i'd like to point out first: Make sure your hookah is airtight. EVERYWHERE. I've seen too many people with a leak try roasting the fuck out of their shisha because they're getting watered down smoke. So take the bowl off, put your hand over the top of the stem, and take a pull on the hose. If you can inhale, you have a problem. Fix it, and try again. Also, bowls take a while to start up, try using only 1 coal (not 1.5) broken in half, and let it take its time heating up.