Hi, I got rid of a couple of circulation fixed circulation pumps in my 120 a couple of months ago and put in 2 Tunze 6105's my SPS (30 of them) are doing much better and growth is doing great now.
The only thing that is being changed this week is light bulbs, when my Giesemann Infiniti bulbs came one year old I changed and setup and put in XM 20k one side (other side got Phoenix as my son broke one XM), the Phoenix side actually has newer corals and the growth is past the XM side, so it will get replaced this week (bulbs ordered), next I put in 4 ATI blue Plus, they look great, but my coral colors were much better with Giesemann Pure Actinics and going back to those this week also.