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The Daily Insight

How long should you boil driftwood to remove tannins?

Author

Chloe Ramirez

Updated on February 23, 2026

You may have to boil driftwood before you place it inside the aquarium. So, how long to boil driftwood to remove tannins? Medium-sized driftwood consumes 30 minutes-2 hours based on age, moisture level, size, shape, and type. Larger driftwoods can take hours to several days to remove tannins entirely.

What is the fastest way to remove tannins from driftwood?

Just like steeping a tea bag in hot water, boiling driftwood in a large stockpot encourages more tannins to leach out faster, thereby shortening the curing process. More importantly, boiling sterilizes the driftwood, killing algal or fungal spores that can take hold once introduced into the aquarium with the driftwood.

How long do you need to boil driftwood?

To boil driftwood, you need a large pot, and you need to boil the piece of wood for about 30 to 120 minutes, depending upon the hardness of the driftwood.

How do you Leach tannins from driftwood?

Tannins will leach out but the rate at which they leach out will drastically decrease the longer you boil the wood and the darker the water gets. So instead of boiling it for 35-40 minutes, boil it for 5-10 minutes, completely change the water and boil for 5-10 min again.

Should I boil driftwood?

Boiling Driftwood

More importantly, boiling sterilizes the driftwood, killing algal or fungal spores that can take hold once introduced into the aquarium with the driftwood. Boiling the driftwood for 1-2 hours will sterilize the driftwood.

How Long Will Driftwood Leach Tannins?

How long does it take for tannins to go away?

In my experience, it's almost always like 4 days at the most for pieces up to about 20" in length. It's almost uncanny how accurate this is! Sure, some will sink in a day, but most, for me- are 4 days and they're sunk!

How do you get rid of tannins?

Filtering It Out. You can use activated carbon to bind up tannins in aquarium water. Activated carbon consists of charcoal granules, heat- and chemically treated to make them porous. This increases the surface area and makes them more reactive and better able to absorb tannins and other compounds.

How long do you boil rocks for a fish tank?

Boiling the rocks and gravel for 10-20 minutes in regular tap water that is at a rolling boil should kill any unwanted pathogens. CAUTION—rocks stay hot for a very long time. Let them cool a long time before you handle them.

Are driftwood tannins good for fish?

Driftwood helps boost the immune systems of your fishes. When driftwood is submerged, natural tannins will slowly leach into the aquarium water. These tannins create a slightly acidic environment that helps to keep viruses and disease-causing bacteria at bay.

How do you prepare driftwood for a freshwater aquarium?

If you can, boil your driftwood for at least an hour and let cool. If your driftwood is too large to boil, submerge it in a bucket with a 5% bleach solution for 10–15 minutes. Rinse very well and let soak in bleach-free water for at least a day to be sure that any remnants of the bleach have dissipated.

How do you sterilize driftwood?

You can sterilize driftwood by putting in a bucket of water with disinfectant for a few days, and then taking out and boiling or baking it. After this, it should be sterilized.

Will tannins harm my fish?

Tannin is not harmful to fish. The only caveat is the appearance of the aquarium, and mainly, depending on the quantity, it can lower the pH levels of the water.

Is tannins good for fish?

Most tropical fish originate in bodies of water that are neutral to slightly acidic. Tannins in the water help to recreate their natural water source, which is where they have spent thousands of years thriving. So putting tannins in the aquarium is great for them.

Will tannins harm plants?

Tannins are found commonly in the bark of trees, wood, leaves, buds, stems, fruits, seeds, roots, and plant galls. In all of these plant structures, tannins help to protect the individual plant species. Tannins that become stored in the bark of trees protect the tree from being infected by bacteria or fungi.

How long do you have to boil wood for?

Step 8) Sterilizing The Wood

If boiling the water with the wood in it. You will need to top up the water as it evaporates, and keep the process going for 1-2 hours.

How do you prepare driftwood?

Preparing Driftwood

First, brush the driftwood gently to remove sand, dirt or anything growing on it. Then, boil the driftwood for several hours to kill any organisms and disinfect the wood without damaging it. If boiling is impractical, soak the driftwood in diluted bleach for a few days to clean it.

What does baking soda do to driftwood?

Add 3 or 4 teaspoons of baking soda to the water in the container. This raises the pH of the water in the container. The alkaline water draws out the tannins in the wood.

Do you need to seal driftwood?

Preserving driftwood isn't particularly difficult, but it does take some time and patience. You can either clean and bleach it to preserve it in its natural state, or go the extra step to seal it in oil, resin, or varnish to preserve it in a protective coating.

How long does it take to dry out driftwood?

Lay an old sheet on the ground outside, in a spot that receives plenty of sun. Place the wood on the sheet and let it dry for at least 24 hours, or until the wood is fully dry.

How long do you boil Malaysian driftwood?

If you have a small piece of driftwood, 15-20 minutes would suffice. However, you will have to boil larger pieces of driftwood for 1-2 hours to sterilize it properly.

Do tannins increase pH?

Tannins released by driftwood can help lower pH, but keep in mind that it takes a fair amount of driftwood to have the desired effect. One or two small pieces will not do much, especially in a large aquarium or one with strong buffering capacity. Add peat moss or peat pellets to your filter.