The 454 has very low PAR compared to the ati blue plus and the kz superblue with almost an identical spectrum.
Actinic bulbs are not going to give you enough par and the spectrum is to narrow, the new blue bulbs out there will double the par and still fluoress “pop” the corals very well. 6 bulb t5 on a tank deeper then 18 inches, you need to increase the PAR buy choosing better bulbs.
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