If you just use one actinic alone everything will be waaaaaay blue/purple. Below is just my actinic on. I'd go 50/50 and if you want a little more blue add a small blue led
strip as well. Actually don't have any of just actinic (got rid) but its very similar to the moon light blue pic below but more purple and bright. Second pic is my old set up with 2 t5 (one 50/50 and one 10k bulb I think) along with the t8 actinic on at same time. Gives nice bit of blue when combined w "normal lights" good luck.