600 HPS,1000 HPS or 315 CMH for a 4x4?

[Yodaweed]

1 600 watt hps= 600 grams,, 2 315 watt cdls (630 watts)= 800 grams wroughly.. that extra 30 watts gets u 200 grams...
yes 1 600 watt hps will yield more than 1 315 watt cdl, but 1 315 watt cdl still gets you more grams per watt more gpw = efficiency ...
i do agree going from 1 600 to a single 315 is just plain stupid, regardless of gpw or efficiency.. your giving up 200 grams.. however putting 2 315's in place of the single 600 watt hps,, your only using 30 more watts, youll also save on heat issues as 2 315's putt out less heat than a single 600 watt hps and you are increasing your gpw by idk 20-25%.. id get 2 315's over a single 600 watt hps and 3 315's insted of 2 600 watt hps...

Yeah i see where you are coming from, 2 of the 315's is a good replacement for a single 600w hps, i guess i still should get a second. I still don't think 2 of them will give the same bud size as the buds directly under a 600w or 1000w hps, the intensity is so much higher directly under the hps compared to these. Yield might be more, though. Similar to growing under LED's, yield goes high but bud size isn't great compared to HPS or outdoors. Better spread on the footprint , but less intensity.

 

[genuity]

This plant is under a 630DE-R lec...same as a regular 600...just better specs...gives the plant better smells & taste.

 

[innerG]

I have a 4' x 4' tent - I'm using an SK400+ and it works great in there

 

[Enigma]

1 600 watt hps= 600 grams,, 2 315 watt cdls (630 watts)= 800 grams wroughly.. that extra 30 watts gets u 200 grams...
yes 1 600 watt hps will yield more than 1 315 watt cdl, but 1 315 watt cdl still gets you more grams per watt more gpw = efficiency ...
i do agree going from 1 600 to a single 315 is just plain stupid, regardless of gpw or efficiency.. your giving up 200 grams.. however putting 2 315's in place of the single 600 watt hps,, your only using 30 more watts, youll also save on heat issues as 2 315's putt out less heat than a single 600 watt hps and you are increasing your gpw by idk 20-25%.. id get 2 315's over a single 600 watt hps and 3 315's insted of 2 600 watt hps...

Ya, know I've heard some people say the 315 CMH can replace a 400w HID, the only problem is every grow I see witha CMH is doing less than a 400w.

They said the same thing about LED a decade ago.

Don't believe the hype.

 

[Lightgreen2k]

in veg the 3100k 315 watt cdl grows plants shorter and more nodes per height than a 400 watt 6500k mh... also using mh in veg then hps in flower nearly tripples the stretch o0f plants vegged w a 3100k 315 then flowered under 3100 k 315 cdl's... a plant that veg's and flowered under the cdl will only double its height..

Have you or anyone used this bulb ?

 

[genuity]

Have you or anyone used this bulb ?
View attachment 3975991

Yup...I run 3-930's & 3-942's in veg.

Did not see a super big difference,in veg growth..with clones

Seed plants seemed to be a Lil leggy under the 942..not bad.

 

[TheChemist77]

Ya, know I've heard some people say the 315 CMH can replace a 400w HID, the only problem is every grow I see witha CMH is doing less than a 400w.

They said the same thing about LED a decade ago.

Don't believe the hype.

a 315 cmh will produce at least 400 grams, way better than a 400 watt hps,, but i say buy more than 1 the more 315's u use the better the gpw gets,, i have 5,, only using 2 in flower and 1 in veg tho...

Have you or anyone used this bulb ?
View attachment 3975991

i use the agro elite 3100k phillips master,,, ive wondered the difference in bulbs myself as my bulbs are near 3 years old,,but my yield is same as the day i bought them...

 

[MichiganMedGrower]

a 315 cmh will produce at least 400 grams, way better than a 400 watt hps,, but i say buy more than 1 the more 315's u use the better the gpw gets,, i have 5,, only using 2 in flower and 1 in veg tho...



i use the agro elite 3100k phillips master,,, ive wondered the difference in bulbs myself as my bulbs are near 3 years old,,but my yield is same as the day i bought them...

How is 400 grams way better than a 400 hps? I can get up to 600 grams from my 600 hps.


And good news about the Phillips bulb. They claim 2 years before grow degradation.

I actually got 2.5 years out of my phresh filter. Truth in advertising. Who would have known.

 

[Yodaweed]

How is 400 grams way better than a 400 hps? I can get up to 600 grams from my 600 hps.


And good news about the Phillips bulb. They claim 2 years before grow degradation.

I actually got 2.5 years out of my phresh filter. Truth in advertising. Who would have known.

600w hps gives best lumen per watt ratio of all hps lights, which makes it have the best gpw ratio of hps lights that are not double ended.

 

[Yodaweed]

View attachment 3975793
This plant is under a 630DE-R lec...same as a regular 600...just better specs...gives the plant better smells & taste.

Those look great, that's run off a 1000w ballast in a DE hood?

 

[pinner420]

Yep 315 3100k.... i still love my 600s though. The meaty spectrum of the 315 is

 

[Lightgreen2k]

Yup...I run 3-930's & 3-942's in veg.

Did not see a super big difference,in veg growth..with clones

Seed plants seemed to be a Lil leggy under the 942..not bad.

with this light , I have more branching then I had under a normal mh light...

a 315 cmh will produce at least 400 grams, way better than a 400 watt hps,, but i say buy more than 1 the more 315's u use the better the gpw gets,, i have 5,, only using 2 in flower and 1 in veg tho...



i use the agro elite 3100k phillips master,,, ive wondered the difference in bulbs myself as my bulbs are near 3 years old,,but my yield is same as the day i bought them...

So what's the difference between the bulbs? and I believe the one I showed was made for veg?

 

[genuity]

with this light , I have more branching then I had under a normal mh light...


So what's the difference between the bulbs? and I believe the one I showed was made for veg?

Yup,lots more branching/ side growth...with both 315 bulbs,compared to a more red-light.
That's what I meant to say "leggy" branches on branching..

Those look great, that's run off a 1000w ballast in a DE hood?

Thanks,& yes..

They still fill like it's lacking something, the plant looks good...but like I said above..still to much side branching..in flower

I want to run them on a 630 DE ballast, to see if any difference.

 

[genuity]

It's the IR that is nowhere near HPS....thats why the buds do not seem "big"@Yodaweed

When I ran the bulbs without the glass on the hoods,the plants reactions where very noticeably different.

 

[TheChemist77]

i dont know the difference in cmh 315 bulbs.. i ask whats the difference as u can buy diferent brand bulbs like ipower that show same lumens and spectrum for $50.00 a bulb wile the phillips master elite agro is $98.00...ive been told to stick w/ phillips but i really wish i knew why its better?? 2 ipowers for the price of 1 phillips,, im struggling w/ the desision what bulb to buy???

 

[TheChemist77]

VIVOSUN 315 Watt Full Spectrum Ceramic Metal Halide Grow Light Bulb - Superior Master Color & Extreme Low Heat ( Enhanced Version CCT-3000K )
5 customer reviews



Price: $49.99
FREE Shipping (5 days) for Prime members Details

Sold by VIVOSUN and Fulfilled by Amazon. Gift-wrap available.




Color: BULB

• 
  

• Full spectrum light, 3000K color temperature, CRI 90. Premium elliptical PCA provides enhanced lumen output and optimized spectra
• Provides the richest spectrum on the market and produces more PAR-value per watt than standard HPS Bulb
• 32,500 initial lumens, over 100+ Lm/W. Promotes higher rate of metabolic activity and resin production through the use of UV far-red spectra
• Low heat generated & enhanced lifespan. Optimal for flowering while also can be used for Veg as well
• Your preferential choice for indoor gardening or supplemental greenhouse lighting

New (1) from $49.99


Philips 315w 98v T12 Clear PGZX18 Mastercolor CDM-T Elite Agro HID Light Bulb
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Want it Friday, July 14? Order within 28 hrs 6 mins and choose Two-Day Shipping at checkout.Details

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• HID Bulbs produce high output for their size making them a compact powerful & efficient light source
• HID Bulbs are used for general lighting, professional lighting fixtures, growing applications
• HID bulbs put out around 3-5 times greater output (lumens per watt) than traditional halogen bulbs
• Philips T12 bulb, 315W,
• Base: PGZX18, Rated Life (hours): 20000, Color Temp: 3100K, Luminous Flux (LM): 33000

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• Use a proprietary phosphor coating on the outside of the arc tube which can provide the richest spectrum on the market! Produces more PAR per watt than standard HPS Bulb
• 3100K color temperature. High 90 CRI. Optimal for flowering while also can be used for Veg as well
• 37,000 initial lumens, 120 Lm/W. 570 μmol/s. Promotes higher rate of metabolic activity and resin production through the use of UV far-red spectra
• High 90% lumen maintenance at 8,000 hr./High 85% PPF maintenance at 20,000 hr
• Great for indoor gardening or supplemental greenhouse lighting

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please tell me what is the difference??? all have the same lumens all for the 315 watt cmh...DOES ANYBODY KNOW IF AND WHY THE PHILLIPS IS BETTER?? OR CAN I SAVE MONEY W/OUT LOSING ANY YIELD W A DIFFERENT BRAND BULB???

 

[Yodaweed]

It's the IR that is nowhere near HPS....thats why the buds do not seem "big"@Yodaweed

When I ran the bulbs without the glass on the hoods,the plants reactions where very noticeably different.

Thanks for that tidbit, i was actually thinking a very similar thing, i am planning to get a new reflector without glass that holds my light in a vertical position, happy toking

 

[Yodaweed]

i dont know the difference in cmh 315 bulbs.. i ask whats the difference as u can buy diferent brand bulbs like ipower that show same lumens and spectrum for $50.00 a bulb wile the phillips master elite agro is $98.00...ive been told to stick w/ phillips but i really wish i knew why its better?? 2 ipowers for the price of 1 phillips,, im struggling w/ the desision what bulb to buy???

check out this research done by growers house, it will make you only buy those phillips bulbs

http://growershouse.com/blog/cmh-315w-lamp-comparison-test-data-review/

 

[jonsnow399]

VIVOSUN 315 Watt Full Spectrum Ceramic Metal Halide Grow Light Bulb - Superior Master Color & Extreme Low Heat ( Enhanced Version CCT-3000K )
5 customer reviews



Price: $49.99
FREE Shipping (5 days) for Prime members Details

Sold by VIVOSUN and Fulfilled by Amazon. Gift-wrap available.




Color: BULB

• Full spectrum light, 3000K color temperature, CRI 90. Premium elliptical PCA provides enhanced lumen output and optimized spectra
• Provides the richest spectrum on the market and produces more PAR-value per watt than standard HPS Bulb
• 32,500 initial lumens, over 100+ Lm/W. Promotes higher rate of metabolic activity and resin production through the use of UV far-red spectra
• Low heat generated & enhanced lifespan. Optimal for flowering while also can be used for Veg as well
• Your preferential choice for indoor gardening or supplemental greenhouse lighting

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Price: $109.95 Free Shipping for Prime Members


Note: Available at a lower price from other sellers, potentially without free Prime shipping.
Only 2 left in stock - order soon.


Want it Friday, July 14? Order within 28 hrs 6 mins and choose Two-Day Shipping at checkout.Details

Sold by HydroBros and Fulfilled by Amazon. Gift-wrap available.

• HID Bulbs produce high output for their size making them a compact powerful & efficient light source
• HID Bulbs are used for general lighting, professional lighting fixtures, growing applications
• HID bulbs put out around 3-5 times greater output (lumens per watt) than traditional halogen bulbs
• Philips T12 bulb, 315W,
• Base: PGZX18, Rated Life (hours): 20000, Color Temp: 3100K, Luminous Flux (LM): 33000

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New (9) from $98.42 & FREE shipping.
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XTRAHYDRO 315 Watt Full Spectrum Ceramic Metal Halide Grow Light Bulb CMH 315W Superior Master Color Extreme Low Heat Enhanced Version (CMH 315w 3K)
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Price: $59.00
Sale: $48.99 Free Shipping for Prime Members
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iPower 315-Watt 3100K Master Color CDM Ceramics Metal Halide Grow Light Bulb Lamp, Full Spectrum
599 customer reviews
| 60 answered questions


Price: $55.99
Sale: $49.99 Free Shipping for Prime Members
You Save: $6.00 (11%)



In Stock.


Want it tomorrow, July 12? Order within 3 mins and choose One-Day Shipping at checkout.Details

Sold by E-Marketing Solutions and Fulfilled by Amazon. Gift-wrap available.





Size:
Style: CMH Bulb

• 
  

• Use a proprietary phosphor coating on the outside of the arc tube which can provide the richest spectrum on the market! Produces more PAR per watt than standard HPS Bulb
• 3100K color temperature. High 90 CRI. Optimal for flowering while also can be used for Veg as well
• 37,000 initial lumens, 120 Lm/W. 570 μmol/s. Promotes higher rate of metabolic activity and resin production through the use of UV far-red spectra
• High 90% lumen maintenance at 8,000 hr./High 85% PPF maintenance at 20,000 hr
• Great for indoor gardening or supplemental greenhouse lighting

New (2) from $49.99
Report incorrect product information.


please tell me what is the difference??? all have the same lumens all for the 315 watt cmh...DOES ANYBODY KNOW IF AND WHY THE PHILLIPS IS BETTER?? OR CAN I SAVE MONEY W/OUT LOSING ANY YIELD W A DIFFERENT BRAND BULB???

Youtube has a cmh bulb test, the phillips was on top but i forget if it was significant. You can get phillips for 75 bucks.

 

[Enigma]

a 315 cmh will produce at least 400 grams, way better than a 400 watt hps

IIRC, another member pulled a pound from a 400w HPS.

~454g/~400W = 1.135g/W

~400g/~315W = 1.269g/W

~454g/~315W = 1.441g/W

1.441g/W x 400W = 577g

I think it is time for a side-by-side.