Little update- trying something new, I been thinking what I can do to make my tank a little more stable. I decided to feed my coral in a plastic container every other day for my mushroom, chalice, and scoly. I use to target feed them, but food still get away and waste is produced in tank. I now use the container, transfer coral into cup...and put food into container and use a syringe to circulate the water. This way, fish won't brother the coral while I feed and most of the left over food is in the container. After feeding I pour the water down the drain and put that amount of fresh saltwater back in the tank, the way I see it...I am putting less food in the system and I am doing small water change every other day along with my bi-weekly water change.