I have not been able to find very much info at all. As several posts have mentioned... Driftwood/bog wood spends months if not years being weathered. I am attempting to test a few small pieces by Boiling, Heat Treatment (in an oven) and repeating the boiling. What I am hoping to do it water log the wood with the boiling process then speed drying by placing in the oven. I am going to repeat this process many times over in hopes I can mimic the long term effect of floating in the ocean and being weathered. I will update later with the effects of this process.
Here are a few links I have come across but nothing that really addresses our situation.
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Aquarium Advice ::
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Driftwood FAQ : Old River Rat Driftwood, Tennessee Freshwater Driftwood
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Using Wood in Aquarium with Tropical Fish
Info:Tannin is an organic, dark substance that occurs naturally in most plant material. It is generally harmless to most fish. Rainforest biotope simulations benefit from the use of bogwood, coconut shells and cork bark. All of these will tend to leach tannins into the water, acidifying it and turning it brown; even in acid-water aquariums this can be too much of a good thing. Hence new materials of this kind should be “aged” by soaking or leaving them outside to weather.
The amount of tannin that a piece of wood contains is dependent on:
1. The species of tree from which it came;
2. The size/density of the piece;
3. The period of time which it has been separated from the tree (period of weathering); and
4. The source from which it is acquired (aquatic environment vs. terrestrial).
The following techniques are used to reduce the level of tannin that is leached:
1. Small pieces can be boiled for 2 hours (the addition of rock salt can hasten this process);
2. Larger pieces can be weighted down and submersed in an old tub for a period of time. The water needs to be changed regularly to dilute the escaped tannins in the water;
3. The use of activated carbon in the filter will greatly reduce the visible coloration;
4. Purigen, a Seachem product, is highly effective in the removal of minute organic particles in the aquarium; and
5. Simply leaving it in outside to weather naturally.
It must be said that some pieces of wood will continue to leach tannin into the aquarium for many years after their addition. In this case, regular water changes will help to prevent the colour from becoming unsightly.
If you come across any info please pass it on. Later, Pop's
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