Never got answered

ill try it out next crop but right now im in the middle of flower so im not ganna change it till its done

MJ,

Looking forward to seeing them.
If they don't have a date to the dance, I'll gladly chaperon them.

lol ill take some new pictures and post them soon

Gentlemen,

First, everyone has some interesting points on this forum. Second, 1% PAR light = 1% Production is a rule of thumb and spectrum does play a part. We all know the weaknesses of the MH (Low Lumens + Heat) and HPS (No Blue Light + Heat). If these lights were perfect, suppliers would have stop designing newer fixtures like the Plasma, and LED modules that I am currently testing. Remember that we use blue light to suppress the vertical growth of the plants in the vegetative stage and then attempt to increase the the light intensity as much as possible during its shorter 12 hour day of flowering. These plants can handle 1500 umols to the face as an upper threshold value (from a research document I have). Therefore, I will end this comment by saying that I just decided to start my first indoor op and picked the Hortilux Eye Super Blue 1000W HPS MH Dual Arc Bulb. This has only 110,000 lumens output which is less than some HPS bulbs out there and a concern of mine. Lumens do not equal PAR but are VERY comparable. With everything that I have seen during my tests the more full-spectrum you can emit on plants the better overall physiologically they will be. Ideally (given an unlimited budget), I would add the UVA, UVB, and Blue of a plasma light and mix it with a HPS if given the perfect opportunity to grow for best quality. (Check out the links)


http://www.roughbros.com/blog/high-intensity-discharge-lighting-hid/

Your welcome ; )

HPS + MH = Fuller spectrum, and yes that is a good thing.

Since I started using both and HPS and an MH (600 watts each) during bloom the response has been favorable. Last time I noticed, because I was being lazy and not rotating the plants, but the ones in the middle between the two bulbs performed the best.

drynroasty said:

I have a question that I am unsure about the answer. I have read, searched, and posted but I'm sill not sure of this answer.

The Question: If I run my 250 HPS and my 250 MH for flowering at about 12 inches away from bud tops in my 2x2 screen grow, will I get better results that if I just used my HPS for flower.

I know HPS is better for flowering cuz the spectrun, more red... and MH, blue for veg. But does it mean that while flowering, if I use the MH with HPS wil the leaves and branches start growing faster, causing more issues with blocking light on budsites?

One guys says that the double lumens will surely make a huge difference (I have no heat issues). I'd like an answer because I don't want to work against myself by making the buds fight the leaves.

Thanks

Click to expand...

Mate my advice is go with it,
1st of all : More watts= more grams as the light covers bigger area and supply more photons for photosynthesis ie better growth.
2: blue spec or the HID tend to decrease the stretch of the plant.
3: I read that mix spec is beneficial to the plant in many ways but again heat issue

Yee Haw! Resurrecting a 5 and a half year old thread...niiiice.