What I did: put the driftwood in a bucket and added boiling water, some times I just used hot water from the faucet. I did this EVERY single day for like 9 weeks, at some point you will notice the water is clearer. My tank looks really clear, before introducing the driftwood I heard that the water was going to get "tea-like" colored, mine is just clear? you can see the difference in the color if you get a glass of normal water and a glass of water from your tank. Its more like a slight yellow color.
Keep doing it and dont give up.
I was about to stop at week 4 and then I thought "well ive done this long time now, lets keep going" you have nothing to lose and its very rewarding