I found some nice pieces of driftwood at a garage sale and would like to add a piece to my 20 gallon. I have Red Glass Barbs, Balloon Red-Eye Tetras, 1 Betta, and some Juli Cory's. I'm boiling the piece I chose at least 3 times. My water is very soft and I heard the wood could soften it even more. Also worried that there will still be tannins in the wood and my tank water will become stained. I'm afraid I may upset the balance in the tank and lose fish. What can I do to up the PH? Seashells? Am I over thinking this?