I am finishing up gathering the equipment for my 40 gallon nuvo which has been running for four and a half months. I am planning on making this a mixed reef tank, but I will be mostly focusing on BTAs, SPS, and clams. Currently I have one kessil A160 over the tank and was planning on getting another one, but I was unexpectedly gifted two GBTAs from a fellow reefer and I put them in this tank and they are quite happy with just that one kessil. My question is even thought the BTAs are happy with one kessil, do I need to buy a 2nd one if I want to keep clams and SPS? Any help is appreciated



