🌱 I've learned that too about letting the smoke sit and it becoming harsh! It's weird because you would think it's cooling down, but it seems like you want to breathe it in as soon as possible! Not sure what you use to clean your bong, but I have found that if you fill it with 99% rubbing alcohol and a bunch of salt, you can shake it around inside the bong and the alcohol will dissolve away the resin, while the salt actually scrapes it. Since I started doing that I haven't needed to scrub the inside of a bong! They also sell this stuff called "420 Cleaner" that does the same thing, but I've tried both and alcohol and salt works just as well and costs like 1/10 the price! 🌱