I just recently put my 6 yr old 13” common Pleco named Mr.Gil in a new tank 55 gallon tank. He’s turning white, barely eating besides a little seaweed only twice in 4 days since I moved him in there. He normally loves seaweed, wafers, zucchini, and broccoli but will only eat a little seaweed. In his new tank he has lights but I’ve only left on the blue lights during the day and at night shut out all lights off. Could the new blue light cause him to turn white and lose his patterns because of the new lighting and environment or is it from stress and his loss of appetite?