Growroom improvements, lighting idea (suppliment my 400hps with a 400 cmh..?)

So i had to tear out my flowering room, and rebuilt it in the following week. Short story i had some short notice handyman work done to the furnace and some electrical stuff, so my grow room was demolished in about 20 minutes (15 of which were me cussing, spitting, and tit bagging).

So the new room is nearly finished. It now sports a Velcro wall opposed to a single zipper slit(which barely opened enough to fit me). The sides are panda film with the lower half covered with the silver mylar (can already see more light spread). and the floor, this part im fond of

The room is sealed, no co2 atm just fresh air. The fresh air is vented in through a false floor that has been drilled more than 150 times with a 1/2 in bit. a 6in hole gives a sq in of about 28.3 and a 1/2in bit is about .2 in, so to equal the flow you should need 151 holes. I put roughly 150 of 1/2 in and probably 100 more 1/4in holes to be sure. The false floor is channeled into a single air intake hole that exits at 4 inches. Two reasons for the smaller intake hole. One the air is cooler when it enters, as such it is less dense and carries more volume per cubic inch. Two for the negative pressure insuring the air is drawn from down to up and sucking evenly from my perforated floor. It feels like an air hockey table when the fan is on.

Will my floor do anything? I truly have no idea. Roots need oxygen, my plants are in smart pots(fabric breathable pots). Maybe it will help, maybe not. If i end up going co2 then i can just block off the intake, and it will be sealed, as well provide a new light intake.


Anyways, on to the light question;

I have a HTG 400w hps in right now. The area is about 3.5 ft by 5 ft. A little long for this light i know. The bulb is in a Euro hood, air cooled. Area peaks about 75 with lights on usually sits low 70s.

So i want more light. I have been close to just buying a 1000w, tried and true system and just being finished with it. OR start trying the new technology. I was considering buying another 400w magnetic ballast and using one of the new CMH Bulbs as supplemental lighting. Together they will not equal the lumens of a 1000w but will offer the new interesting advantages of the CMH system. Both lights can run closer and heat will really not change. The results i have seen(speculation really) from the CMH systems seems like they could be a new big thing.

I would then consider the HPS high center mounted, with the CMH being closer vertical or centered. on a wall, or angled, or rotated around. Not quite sure yet.

I really like the idea of new lighting technologies, and the idea of a great new light, lower heat, lower electricity(though i know not by much) all sound fun. Lets get some opinions on it.

Also i would love to search it, but the CMH phrase used is too short to return, google +rollitup helps but im sure there is more.

Also does anyone know if the CMH Bulbs work in the new AN digital low frequency ballasts?

Thanks tons

The last option i suppose is just swapping out my 400w hps for a CMH as my bulb is a cheap one im sure(came from HTG as their basic bulb) and my ballast is magnetic, should be fine there.

Any thoughts today?

I have been considering adding the CMH as a vert blub with a clear diy cooltube(making sure i get the vert bulb). with the hps 400 on top for a nice spread. Thoughts?