So my 90 gallon with 30 gallon refugiom sump has been running for about 3 months now. This was an upgrade from my 54 so its a 5 year old established tank. I check parameters every other day and i am pulling 0 nitate,0 nitrite,barely any ammonia it looks like 0 but Im not for sure and a ph of 8.6. I have a bunch of frags in the tank and was wondering if there are any suppliments I can add to promote growth and not screw the tank up. I have coraline growing nicely. My temp right now is between 79-83 with the 2 400watt mh i have them about 6 inches above the tank.