Put a slate in the tank, one that you can remove easily. Take that big chunk of driftwood out, they will spawn on it and you can't remove the eggs. When they spawn on the slate, take it out and put it in a 1 gallon jar. Put the jar in a ten gallon tank with a heater. Put an air line into the jar for circulation and use a good antifungal. Google will get you lots of info on raising Angels.