10-24-2006, 04:32 AM
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Something to remember about the wood coming from natural waterways: You not only have pollution to worry about, but other "animals" in the natural world that live inside of those pieces of wood. I mainly speak of insects who lay eggs in the wood, and because of it's density, bleaching and boiling don't effect the eggs... suddenly one day, a month, 6 months.. later, they hatch... and infest the tank.
I have witnessed this in a number of people's tanks, and in several cases it was not only a problem with bugs, but killed some of the fish before it was resolved.
It's safer to use bought wood that has been specially treated to prevent this.
Another problem with using bleach, it can make the wood soft and mushy, and it makes a mess in the tank.