New setup carbon question

[Overland04]

Setting up a new 50g bb SPS tank.
How long into the cycle should I wait to run my carbon/phophate reactors?
Is this something I can run from the start or wait till the cycle is over?

I'm using all my live rock from my 125 mixed reef takedown and half the water from it also.

[Sisterlimonpot]

Do you have LR? If so I would go ahead and start now. Just to stay on top of any phosphates they may peak during your (mini cycle). And same goes for the carbon, any yellowing of the water from die off of the rock will be taken out with the carbon.