I have a gold chalice that looks to be losing color. Its starting to get darker in color and was wondering if its due to to much light. I have this in a shallow tank(24 L x 24 W x 10 H) and my lighting is a hydra 26. Light is 9 in off the water. Here are my setting when they peak UV 15%, Violet 40%, DB 40%, RB 40%, G 10%, DR 10%, and CW 20%. Any advice is greatly appreciated.