Originally Posted by cantsay39
I let it float for few hours before dumping them into the tank
Floating does nothing.....if they're in a kordon breather...it would be detrimental since they would suffocate.
Drip method overall is the safest method IME. It allows for shrimps to adjust to TDS and gH. pH too.
GOing from softer water to harder water is the one that's more dangerous.