My new light i have a question

[butwa20]

I am upgrading my light on my 75 I just bought a fixture with 2x250W HQI metal halide and 4x54watt actinic. I have a t-5 217 system on it right now with 2x10000k and 2 actinic. Now my question is will that be to much ligh if I run both or can I take out the 10000k and switch it out for those purple tubes instead.

[alton]

You will definitely need to acclimate your reef to the new light. Maybe start out with two 10k with two actinic so it looks normal with an hour of MH and increase the time for MH slowly, and then switch the two 10K out for full actinic later on.