how much should I turn down my a360 after adding t5s?

[turbo2oh]

I'm currently running a Kessil A360we at 65% over my 60cube. I'm upgrading to a Aquatic Life LED/T5 fixture which adds 4 T5s (ATI blue plus bulbs). My question is to avoid shocking my system how much should I turn down the Kessil to keep the output roughly the same?

Thanks!

 

[Breadman03]

*Not an expert*
I'd probably leave the Kessils alone to start and would begin running the T-5's for an hour or two, then gradually increase T-5 time until they are at about 4 hours. Tune down the Kessils as indicated by growth/color/nutrients.

 

[saltyfilmfolks]

*Not an expert*
I'd probably leave the Kessils alone to start and would begin running the T-5's for an hour or two, then gradually increase T-5 time until they are at about 4 hours. Tune down the Kessils as indicated by growth/color/nutrients.

This.