15k or 20k XM

[regal]

I am currently running 2 xm 10K on my 400g. Added another 400W retrokit. Wondering should I use a 15K or 20K bulb to supplement the 10Ks? No other light currently other than the 10K.

 

[Sean]

I like 20k bulbs

I would make two of them 20k and the one in the center 10k but thats me

I actually just left a client that has that exact set up but 250 MH