Originally Posted by JohnnyD44
boiling the wood is the best way to remove *some* of the tannings....i still have not come across any pieces of wood for aquariums thats are completly void of tannins altogether.....you could boil the heck out of it and then let it soak to see if it turns a bucket of water brown or not.....
I really hope you are talking about not dechlorinating the water used from the partial water change to soak the driftwood in....when doing pwc, a water conditioner is crucial to the survival of fish....
There is no need to use dechlorinater in the water that is being used to soak the wood.
On water changes of less than 20% I don't dechlorinate, its not really the fish that the chlorine affects, although in high concentrations it can pose a problem because it is diluted by 20%.Its the filter bacteria that you should be more worried about, I know of loads of people that keep discus that don't use dechlorinator, and they carry out 90% water changes daily!
The chlorine dose in water pipes is not meant to handle a colony anywhere near the size of what we have. Once a colony is mature then it can appears able to resist the chlorine in tap water (assuming the chlorine stays in the water long enough to get to the colony rather than gassing off).
I have also found out through research that the amine part of chloramine can be processed by our filter bacteria, which intern means the chlorine will gas off as normal.
consider how long it takes for us to get a bacterial colony of the size we want. Assuming a 20 day cycle and a doubling of the colony every 24 hours then we have a colony some 1,048,576 times greater than the levels of bacteria found in the tap. As a result the amount of chlorine found in a water change will not be enough to completely wipe out the colony.