Lighting upgrade advice

When it's cold I use a CMH in my 3 by 3' tent. When it gets hot I use my 4 "cob" dimmable system. The Cob system puts out more light with much higher efficiency. CMH puts out a very high quality light though.

The cobs have to be dimmed down when the plants are young to less than 100 watts so you save tons of power. In flower I crank them up to 300 to 440 watts. The CMH always uses 350 watts.
 
And god said let there be light!!! (I think)
1737437

1737438

Extra 600w HPS added, temperature sitting at 30 degrees Celsius a little warm but they are handling ok, end of week one flower. Will see how goes.
 
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