Just remember everything takes time, this tank didn't happen over night I started back in 1999 with my first tank a 72g bow. I have upgraded 3 times, the last was a little over a year ago with the 215g you see now. I have learned to take my time with my reef tanks, especially now with how much time and money I have invested into the hobby. Yeah the 45 gallon water change isn't a very big percent either as the system is 370 gallon system. Its only a 12.2% water change. Probably 90% of the corals that I have I have had for 2 years plus and about 50% for more then 6 years. Many have changed color over that long amount of time in captivity, I just changed out 2 6ft actinic vho for 4 4ft t5 3actinics and 1 blue+ guesselman bulbs with individual reflectors. So we'll see if that makes everything grow better and more colorful while saving electricity. Thanks for checking out my chronicle -Keith