65 gallon tank ...up and running for approx. 6 months....various soft and few hard corals doing well for approx. 3 - 4 months...fish= six line wrasse, (2) maroon clowns, percula clown For the past two months i have been trying to sucessfully introduce an angelfish (flameback, flame, coral beauty) but they each have perished within 3 weeks...I'm wondering if the strong water current and high tank cycle rate affect these fish....are they sensitive to this type of environment? would tangs be a better species of fish? looking for a colorful and hardy specimen...any rec's?