My branching frogspawn has been growing, but also has whitish spots on it. The spots have me rather worried. Is this bleaching? An illness? Or could it be completely normal? I'm a total newbie to salt water and finding my way. Parameters: 29 degrees Celsius, 1.025 salinity, 8.2pH. Low flow tank, but have it up high to get a little more flow on it. 6hrs a day light. Phytofeast 2Xs/week. 30gal tank.