Thank you all.
The wood has been soaking in a black tub in the good ole Texas sun for months. I change the water once a week. It started brown. It is now clear.
With the limestone, I was concerned about the ph. But I put this rock in my non planted tank for 6 months, and the ph never changed. I thought this strange, but decided I could risk it in my planted tank because I really like the look. I will look into the Amazonia.