So I am considering using 3 ATI blue plus and 1 ATI aquablue special in my 20g reef tank. Right now I have 2-ATI blue plus and 2-ATI aquablue special, but id like the tank bluer. I have acroporas right under the aquablue special bulb, and can keep it there if best for them.
Other corals to consider are acans, chalice, and other LPS
corals (favias and favites). Can I get away with a much bluer tank? I dont want to seriously stunt the corals growth since they are mostly frags