Originally Posted by ZenSilk
It's never the hookah that makes the bowl harsh man..
You have to make sure to move the coals around and ash every once in awhile 20 minutes is a bit too long without moving the coals. Depending on your bowl size, 3 coals is probably too much. 3 coals should really be used on Medium phunnels (or larger) or Egyptian bowls loaded with Nakhla. 3 coconaras is alot of heat so you have to be careful. 3 exoticas is less heat, but when the bottoms go out it will get harsh tasting. 3 QL is way too much heat for any bowl.
I use three qls on my small phunnel all the time, works like a charm!