I have a 200 watt cfl blue and a 400 hps I use as back up and for when it warm dnt mind down grade for heat adjusting.
So @ vostok are you saying cfl is okay because the wife ain't letting me got nothing else apart from what I got so its using 400 hps I have
Or 600 hps
Or 200 cfl
But I need to know the hours and what's the lowest but yet effective time for em
Using T5's or even T8's(shoplights) is what indoor guys use in hot climates(Australia) ..
even then it can still get too hot, even for outdoor growing,
they then switch to growing at night leaving lights off for daytime..it works well ...if you can't get these
I recommend you compliment your cfl blue?(assume this is cool white,6500k).
by adding another 200w cfl, but in warm white, 2700k, for correct internodel spacing
call it an early Christmas present , to yourself, this extra 2700k cfl imo is essential to your setup
as for 'auto' hours 18/6 is normal, avoid going less than 16/8 as their more light, the more growth, the more bud
but take a look around your place there is always something you can cut power on
and in most cases this 'weed' expense is no different than the cost of running a metal shop, train collection
fish tank collecting, or a host of other power demanding hobbies...good luck