Illumination
Member
I would like to cordially invite you to join us @ riddlem3.com ...would love to share in your research as we are on the same path it seems...or at the very least similar...thank you and hope to see you soon
-
ICMag with help from Landrace Warden and The Vault is running a NEW contest in November! You can check it here. Prizes are seeds & forum premium access. Come join in!
I would like to cordially invite you to join us @ riddlem3.com ...would love to share in your research as we are on the same path it seems...or at the very least similar...thank you and hope to see you soon
M
MrSterling
Quick question,
I picked up two 400w Philips CMH bulbs and appropriate ballasts from ATS and I need two reflectors. The ballasts don't appear to come with a socket, so I'm assuming my options are finding a reflector with a socket, or buying a socket if the reflector doesn't come with one? Any technical advice or reflector recommendations are greatly appreciated.
- Mr. Sterling
Edit: I should note I'm looking for an economic open reflector. I'm planning on upgrading in the future when money is less tight.
I picked up two 400w Philips CMH bulbs and appropriate ballasts from ATS and I need two reflectors. The ballasts don't appear to come with a socket, so I'm assuming my options are finding a reflector with a socket, or buying a socket if the reflector doesn't come with one? Any technical advice or reflector recommendations are greatly appreciated.
- Mr. Sterling
Edit: I should note I'm looking for an economic open reflector. I'm planning on upgrading in the future when money is less tight.
Last edited:
Econowings are cheap.
M
MrSterling
Thanks for the reflector suggestions! I'm now wondering if I've made a terrible mistake in getting a ballast kit instead of a commercial one. Any words of wisdom afloat on hooking these things up safely and maintaining them safely? I'm green on the subject.
Pax tibi!
Pax tibi!
horribly inefficient though. they fared poorly in reflector test....
I had a chance to sample Dinafem cheese
the first was the plant from seed a fem and it was very tasty fragrant good strong medicine. It was flowered the distance under cmh.
lately (2 times) I have sampled the cuts of that mother seed plant that have been flowered under straight hps and they are not even close to that first cmh mother plant.
They lack quite a bit in all departments compared to that 1st cmh plant and they were given plenty of time to flower under the hps.
The best flowers I ever grew came under 1k metal halide for full flower.
the first was the plant from seed a fem and it was very tasty fragrant good strong medicine. It was flowered the distance under cmh.
lately (2 times) I have sampled the cuts of that mother seed plant that have been flowered under straight hps and they are not even close to that first cmh mother plant.
They lack quite a bit in all departments compared to that 1st cmh plant and they were given plenty of time to flower under the hps.
The best flowers I ever grew came under 1k metal halide for full flower.
StoopheadFred
Member
Just wanted to say THANK YOU to everyone who has contributed to this thread and opened my eyes and helped me see the (cmh) light!
Just picked up a 400w mag ballast and 3 150w GE CMH specific ballasts. Stoked to be part of the club and I'll throw some pics up on here once things get rolling!
Just picked up a 400w mag ballast and 3 150w GE CMH specific ballasts. Stoked to be part of the club and I'll throw some pics up on here once things get rolling!
StoopheadFred
Member
Yea they're electronic pulse start mh ballasts. I was just looking to pick up a 400w ballast and the guy I was buying them from basically threw these and a bunch of AN products in for free. Only problem is they don't have bulbs, and tracking down the proper ones is proving a little more difficult than I would have thought.
StoopheadFred
Member
Well apparently they exist on paper (http://www.ecat.lighting.philips.co...our-cdm/master-colour-cdm-ep/928488800091_eu/) but tracking one of these down is like trying to find a two-horned unicorn! I found some on 1000bulbs (http://1000bulbs.com/product/4786/MHS-0150377242.html) but the product codes are different so I'm not sure if they're a discontinued model or what.
Can anyone tell me what benefit comes from the amount of spectrum/wavelength CMH bulbs put off that plants either do not use or use extremely little of?
A bulb, any bulb of any wattage, will only be capable of putting off so much light. Is there a benefit to be found by reducing the most useful spectrums/wavelengths to plants that any given bulb can put out by making one that puts out some percentage of spectrum/wavelength that plants either do not use or use extremely little of?
The CMH is advertised to put of light more like that of the sun. Well, the sun puts off all sorts of wavelengths that plants do not use at all and some plants use extremely little of. So how is being more sun-like a real plus?
Doesn't it make more sense to flood plants with the absolute maximum amount of spectrum/wavelength they need/use the most at different stages of growth than to reduce that but add spectrum/wavelength that is useless or nearly useless to plants?
A bulb, any bulb of any wattage, will only be capable of putting off so much light. Is there a benefit to be found by reducing the most useful spectrums/wavelengths to plants that any given bulb can put out by making one that puts out some percentage of spectrum/wavelength that plants either do not use or use extremely little of?
The CMH is advertised to put of light more like that of the sun. Well, the sun puts off all sorts of wavelengths that plants do not use at all and some plants use extremely little of. So how is being more sun-like a real plus?
Doesn't it make more sense to flood plants with the absolute maximum amount of spectrum/wavelength they need/use the most at different stages of growth than to reduce that but add spectrum/wavelength that is useless or nearly useless to plants?
plants use all wavelengths of PAR light and some beyond 400-700, such as far red and UVA/UVB. Even green is a very important color at high intensity light. Think about this: plants have evolved under sunlight for millions of years. They are adapted to fully and efficiently use the spectrum of sunlight. However, not all wavelengths are completely equally effective and blue light requires more energy to produce. You can make red light more efficiently than full spectrum light. So for indoor growing a HPS lamp makes very efficient many photons, but it is not the right spectrum for a healthy plant development. Some colors are important as signal light, such as far red.
So, you will, say, it is easier to grow under full spectrum? Yes it is. In general using a good full spectrum light will show a better structure and the plants stay greener. It is actually a bit more efficient than the HPS color of light, though the lamp itself is not as efficient as the better HPS lamps. A combination of MH/CMH and HPS is efficient and shows better results than just HPS. It's just difficult to mix in a small room.
the philips cdm-t150 will run off those ballast and are widely available on this side of the pond the lamp is available in both 830 and 942 and are available in rx7 and g12? sockets not sure if you can get them as giant edison screw i run 2 as sidelighting in flower
Dual 400 CMH in 2 x 4 closet. Week #12 
...
i've got 5 upstairs now with 3 weeks left to flower the amount of crystals on the plants is unbeleiveable far in excess of my mates grow who mentored me we use exactly the same nutrients and rates of application and i get my cuttings from his plants my plants are far healthier and the smoke is of far better quality i use h and g roots accelerator the full range of bio bizz nutes with applications of halo ( a product i've heard very little of on here but certainly works for me) with epsom salts applied twice through the grow all grown in canna proffesional plus in 5gl pots my lighting due to a blown ballast is currently an osram 250w hps in a cool tube with 2 150w cdm-ts as side lighting in vert reflectors one which is 942 and the other being 830 the plants under the 942 do better than the 830 but crucially the plants all lean towards the side lights despite the osram being both closer and more powerfull which tells me the plants prefer the full spectrum light over the pure hps as has been explained on here on numerous occasions by whazzup and many others is that a plants natural enviroment is under full spectrum light are you seriously trying to tell me after thousands of years evolving under this light that plants haven't developed processes to take advantage of the whole spectrum i firmly beleive that plants use parts of the spectrum that people don't think they do and please try to remember that current scientific understanding is just that an interpretation of the truth and tommorow it will be much different
CMH/HPS will always produce better buds, than HPS alone.
Period.
End of story.
Period.
End of story.
