I'm doing a freshwater dip to get a camel shrimp to bug out of my Lr. How long do I need to dip each piece of rock for? Will my bacteria die off the rock with a dip? How long will my Lr be safe out of the water as I want to take it out one pie e at a time and don't have enough water buckets to keep it submerged in salt water after the freshwater dip.