thanks man. Its been a slow and steady start..SPS are relatively new and doing well so far. Getting some polyp extension from the green slimer which Im happy with. If all stays well in a few weeks, plan to add more. May wait until I swap the T5 for LCD. With good water quality, how long do you think the T5 will support SPS? Tank is only 12"deep, so from what I have read, 4x T5 may do just fine. Still fairly new to the hobby so always looking for advice.