Yes, adding some natural Driftwood to your aquarium will safely lower its pH levels. Like Peat Moss, driftwood will release tannins into your tank’s water, reducing the pH.
Watch the video to learn What is pH and Why it is Important in Your Aquarium.
However, because it contains tannins, it will also color your water yellow/brown.
This discoloration is just color, it won’t be harmful to your fish or plants.
Don’t just go adding driftwood to your tank, as it could potentially disturb the environment in your aquarium and stress you fish.
Not all driftwood is the same, so you should make sure it’s safe for aquarium use. Driftwood sold for reptiles may look fantastic for your tank, but it could contain chemicals which are harmful to your fish which Malaysian driftwood is not contain chemicals and safe for aquarium use.
And it’s always good to take a few precautions so there’s no dirt or debris.
You can also boil it in salt water to sterilize it, this will also help stop the Driftwood from coloring your tank water too much.