Cancelling out driftwood acidification - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 03-11-2013, 11:32 PM Thread Starter
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Cancelling out driftwood acidification

Wood in tanks will give off tannis which is acidic.

How to counter? Seashells?
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post #2 of 5 (permalink) Old 03-11-2013, 11:43 PM
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Re: Cancelling out driftwood acidification

Purigen

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post #3 of 5 (permalink) Old 03-11-2013, 11:59 PM
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Purigen will absorb the tannins out of the water. I know for sure it will clear up the yellow water caused by the tannins, I assume it also cuts down the acidification.

You could also add something like crushed coral to buffer the water, but you'll dramatically increase your TDS. Depending on what you are keeping in there will determine if that's a consideration for you or not.
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post #4 of 5 (permalink) Old 03-13-2013, 04:33 AM
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Depends on the driftwood, too. Some seems to have almost no affect on the water chemistry, and little to no tannins.

Remove tannins before adding the wood to the tank. Boil the wood, or, if it is too large you could run a very hot shower over it, or soak it in whatever container it fits in (kiddy wading pool, garbage can, bath tub...) in many changes of water for as long as it takes (several weeks, a month) to reduce the tannins to where it is acceptable.

Acidic reactions:
Best way to counteract the constant, low level of acidic reactions is to add coral sand, oyster shell grit, or limestone sand to the filter. I use a nylon stocking as a media bag. You control the level of change by the amount you use. Test and find out how well it works for you.

Basic method:
1) research the fish. What are their requirements? Most important is GH.
2) Test your tap water. How close does it meet the needs of the fish?
3) Test some of the water the driftwood has been soaking in. Is this better or worse for the fish you have in mind?
4) Add some minerals like baking soda (raises KH and pH) and Epsom salt (raises GH) to the soaking water. Does this help? For how long? (I suggest these easy things because you probably already have these on hand)
5) If the test 4 worked, try any of the materials I listed in the paragraph above. Coral sand is sold for aquariums. Oyster shell grit is sold for small caged birds like Budgies. Limestone sand might be common in your area, or you might have to go shopping in a masonry yard. These are slower, and probably will match the slow action of the driftwood in the tank.
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post #5 of 5 (permalink) Old 03-13-2013, 04:00 PM
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It's really going to come down to how big the tank is, what type of wood you use, and how much you put in there. Just running carbon will remove the tannins color out of the water, but it should take the acidity with it(just as carbon will remove meds from water). If you keep up on regular water changes, there shouldn't be anything to worry about.

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650g fish room. 15 30g tanks, 150g sump.
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