Running HPS and MH bulbs together in flowering?

Ok,
I have read that alot of people suggest using the two lights together in flower. There are various reasons to do it, keep plants short and bushy, and filling out the light spectrum..and I am assuming there's one or two who have tried this out, or would know what one would expect.

I currently have a 5x5 room and a cool tubed 1000watt HPS. (pic below will give you an idea) I bought another cool tube, and ballast and am planning on doubling the grow room to 5x10. I have only got 1 HPS bulb that I am currently using, and I also have one 1000watt HPS I am not using.

My question is, could I run the MH and HPS inline in that space and reap any benefits from running them both - or would I be better off to just get another HPS bulb?

I have attached a VERY professional rendering of my proposed set up. And a pic of what I have.. I am just basically attaching another room identical to the one I have now so 10 ft long. I can run weeks 1-4 under the MH and shove the totes down the pipeline until they get to just under the HPS for the final 4 weeks.

What I am wondering is- would this help maintain short bushy plants during the initial stretch period, and then allow them to fill out under the HPS as they start throwing bud weight on around week 3-4 anyway... and for the middle of the flowering it would be in a mix of the light spectrum. It sounds like it would be a decent idea.. but would like some input from some of you just to make sure I'm not thinking with my weed goggles on ..I have flowered under just MH before, and am not super happy with what it does, but have heard of guys changing out their bulbs.. is it worth a shot? going for 3/4 to 1 lb every 2 weeks.


Thanks.. any input and debate is welcome

Edit.. and HPS Bubl... is french for bulb.

for some reason the 2nd pic isnt loading for me, however the blue spectrum is best for late flowering. do you mean you have a spare HPS balast? if so id grab a CMH bulb for it. Otherwise i think the best dual spectrum setups with two lights are either on movers or vertical. My choice would be to go vert.

EDIT: sorry didnt realise you have enlarged the room, Id say go with the light movers parallel brother!

not sure MH is best for late flowering. people think that cuz it emits UVB but thats only true if the casing is removed.

Ok, let me see if I can surmise,

lazaah said:

for some reason the 2nd pic isnt loading for me, however the blue spectrum is best for late flowering. Since when is blue spectrum better for flowering? You use MH for veg.. MH is a blue spectrum light. HPS is used in flower, and is a more red spectrum.

do you mean you have a spare HPS balast? I have one magnetic ballast (only HPS) and one electric ballast that is switchable.

if so id grab a CMH bulb for it. They are both 1000watt ballasts.. CMH's aren't made to replace 1000watts yet, and until they are.....no can do, or yes, I would.Otherwise i think the best dual spectrum setups with two lights are either on movers or vertical. My choice would be to go vert.

Not an option to go vert.. I have 6 feet height. I have discussed light movers with people who have used them, and basically told me not to bother. The said that you get to grow in a larger space but the plants on the outside of the grow aren't worth shit, so you end up with about the same yield as if you just grew in your light's footprint.

EDIT: sorry didnt realise you have enlarged the room, Id say go with the light movers parallel brother!

Click to expand...

I haven't enlarged the room yet, I am just planning for right now. I have about 3 weeks until my clones are going to be ready to move to flower. The light mover won't really fit into my space. I can't go any bigger than the 5x10 right now -just so I can access all side of the room, if you look in the pic of the room, each one of those panels come apart, and I can access the plants right in front of it. If I expand after this, I will have to just use the whole room (15x17) .. even then, I would still just get 4 X1000 watters. I don't know what you mean maybe by "light movers parallel"..maybe if you can explain what you mean I will be able to picture it better.

I'm not trying to shit on you for trying to help man, don't take it that way.. just trying to give extra input as to what I CAN do, or have room for atm.. you didn't know those restrictions, so I still appreciate the attempt. If you can think of anything else, please throw it out.

I hear what you're saying but blue spectrum (MH) is generally a veg light. When used in veg you keep your plants short and bushy, which is what you want when growing indoors-unfortunately, artificial light only penetrates so far. The only reason some people put MH in late flower is that it's got a higher content of UVB light. UVB light has been shown to increase trichome production, and THC content. Very Cool stuff, but I have flowered with MH and don't like the fluffiness of the bud you get when you use it in flower. It's personal preference. Once I get this all set up, I am planning on adding 3 of the 10.0 UVB bulb and ballast sets to my room... likely coming this February.

http://www.exo-terra.com/en/products/compact_fluorescent_bulbs.php

Plus rep at you though++ for helping.

Hehe cheers bro, to be honest you probably have a better idea about what your upto than me, thought i throw ideas at ya. by parellel light movers i meant two lights on movers beside eachother, that way you could use 1mh and 1 hps or 2 hps. By the sounds of it you've already decided against the movers (although if you had them moving opposite ways you wouldnt have the prob of shitty yeilds at the end). But if your planning to move to 4 1000's, then your a lucky bastard! haha. I'd look into the 600's though!