Help!!!! My brand betta new tank is in it's fishless cycle and the pH level is super high( It has some driftwood and 2 anubias plants that are newly planted). My driftwood has been leeching tannins in the water even though I've boiled it twice, but i figured I'd go ahead and put it in the tank since I've read it isn't necessarily harmful. But the color was yellow and gross so i did a 50 percent water change. I tested old water and the ph was 7.6. Shocked i retested and sure enough 7.6. I ran and tested the aquarium with the new water and it was still 7.6.What can i do?