I went walking along the river yesterday looking for driftwood, and found some REALLY nice big pieces to put in my sa/ca community. i have a 12 gallon trash can that i use for my water changes to put the old water in, and i have them soaking in it now. I dont want my water to turn brown, and the biggest problem so far is that some pieces float! No telling how long these pieces have been dry, and i mean they are DRY. whats the best way to make them not float? how long should i soak them to avoid turning my water brown? Is there anything i can do to make sure that this driftwood wont hurt my fish? Is there anything i should be cautious about?