Put carbon in the filter, if you have carbon in the filter, replace it!
I see too many people "struggling" with tannins and going through so much effort to boil them, soak them out of the wood.
All it takes is carbon. This is well known by many but for some reason there's a lot who haven't heard here.
I set up tanks with freshly picked up and cleaned driftwood near the river, in the backyard, anywhere. I've never had an issue with tannins on a tank with fresh carbon. Never, no way no how.
Thought I'd toss this out for those who didn't know.
Want it gone faster? Water changes and carbon.