I have a fancy goldfish tank and was hoping to put in a piece of mopani wood that i have been soaking for a month , however i have now read that it can lower PH , as my ph is already 6.4-6.6 so quite low for goldies . I dont really want it to drop any further. Do you think this will be an issue Im trying to make more swimming room and the plants i have take up quite a bit so i wanted to cut down on them and go with the smaller wood, the water is pretty clear now when i empty the bucket with the wood in but do i need to do anything else with it before i add it like boil it or anything ?