I have a 75 gallon tank with 3 double t5 54w fixtures.
10,000k
18,000k
actnic-k
actnic-k
actnic-k 420
6,700k
I have been using the lights for about 2 years now and I have multipule acros that are easily 4 times there orignial size . Also montipora plates growing like weeds. As well...