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

Yodaweed

Yodaweed

Well-Known Member
TheChemist77 said:
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...
Click to expand...
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.
 
Enigma

Enigma

Well-Known Member
TheChemist77 said:
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...
Click to expand...
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

Lightgreen2k

Well-Known Member
TheChemist77 said:
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..
Click to expand...
Have you or anyone used this bulb ?
20170710_224328.jpg
 
TheChemist77

TheChemist77

Well-Known Member
Enigma said:
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.
Click to expand...
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...
Lightgreen2k said:
Have you or anyone used this bulb ?
View attachment 3975991
Click to expand...

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

MichiganMedGrower

Well-Known Member
TheChemist77 said:
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...
Click to expand...

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

Yodaweed

Well-Known Member
MichiganMedGrower said:
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. :-)
Click to expand...
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.
 
Lightgreen2k

Lightgreen2k

Well-Known Member
genuity said:
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.
Click to expand...
with this light , I have more branching then I had under a normal mh light...
TheChemist77 said:
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...
Click to expand...
So what's the difference between the bulbs? and I believe the one I showed was made for veg?
 
genuity

genuity

Well-Known Member
Lightgreen2k said:
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?
Click to expand...
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..

Yodaweed said:
Those look great, that's run off a 1000w ballast in a DE hood?
Click to expand...
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

genuity

Well-Known Member
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

TheChemist77

Well-Known Member
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

TheChemist77

Well-Known Member
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
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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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Philips 315w 98v T12 Clear PGZX18 Mastercolor CDM-T Elite Agro HID Light Bulb
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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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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






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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

Yodaweed

Well-Known Member
genuity said:
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.
Click to expand...
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 bongsmilie
 
Yodaweed

Yodaweed

Well-Known Member
TheChemist77 said:
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???
Click to expand...
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

jonsnow399

Well-Known Member
TheChemist77 said:
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
2 customer reviews



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
› See more product details
Compare with similar items





New (9) from $98.42 & FREE shipping.
Report incorrect product information.



XTRAHYDRO 315 Watt Full Spectrum Ceramic Metal Halide Grow Light Bulb CMH 315W Superior Master Color Extreme Low Heat Enhanced Version (CMH 315w 3K)
Be the first to review this item



Price: $59.00
Sale: $48.99 Free Shipping for Prime Members
You Save: $10.01 (17%)





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???
Click to expand...
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.
 
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