I just switched over to some new lights which consist of 2x 10000k, 6500k, and a 5500k t5ho bulbs. I noticed that the leaves of some of my plants are starting to have holes in them and a light brown burnt look to them. even the anubias thick leaves are starting to get holes. Is this too much light for a regular 20 gallon tank? I didn't change anything in my fertilizer dosing except i started using flourish excel about two week ago. I still have my old bulbs and will use those again if need be and sell the new ones(one week old).