I didn't leave them in the water. I just dropped them in there to see which ones floated. I know with mornig glory seeds, if they float, then it means there is air in the seed and it's not viable. But I wasn't sure with cannabis. I got a free pack of master kush and they all were tan and also floated. I placed them in a wet paper towel and now they are dark brown in color. One actually cracked open. Its been 48 hours. I wanted to wait to see what the master kush did first before I messed with my white widow. I figure since white widow is from a white bud, mayby the seeds are naturally pale compared to other seeds.