I always boil my rocks. Video tape the boiling. If it explodes put it on youtube and make some money . The instances I have heard about rocks exploding is due to them being wet and then heated rapidly. The steam is what causes the explosive reaction. So boiling them removes any of those factors from the equation.


Draining the drainage layer. Go look at Bills Solitude build. He shows off the way he drains his tanks. That is also how I do it, but lately I have been drilling my tanks and putting in a drain so it empties itself as it gets full