It would be good if future LED fixtures allow customers to pick & choose the kind of colour they want, like on a multi-tube T5 fixture. Then customers can buy & install LED bulbs like "Aquablue Special", "Blue Plus", "Actinic", or "Purple Plus" into their LED fixture like in a T5. Give us the FREEDOM to mix & match to find one's favourite combination.
If we're able to achieve the coloration this provides, then will LED have a chance to retire T5 in this reefing industry.