Hey Shao, IYWMO I would say it's the sand too. I added about an inch of new sand a few years back that I picked up from Mexico. Everything was great that morning, when I came home two days later however, the 402 had blown up a storm 12 times throughout each day :shock: . Due to my not thinking that morning

ops: , I lost a really nice Colt and a small Green Brain from the sand suffocating these two pieces
Sorry hear that

, and I hope the frags bounce back :!:
Rich