This sounds like nonsense, can you provide evidence or reference a source? How exactly does the spectrum get 'polluted'? I'm not using the Greenpower/Agro, but our 942s are supplementing just fine. Actually now thinking we should have gone with the Greenpower to start. Should I get a pollution meter and learn where I'm mistaken?
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Cannologist
New member
If you saw my previous comment in this thread, you'd see that I've done my fair share of reading in this thread, and I just scrolled over the last 10 pages looking for links. But the only site I can find is ATL, and from what people write in this thread, I doubt very much I will order from them.
What other pages can I order from? 860W, vertical, open fixture?
Do you guys use different bulbs for growth and flower with the CMH's as well? Think I read something somewhere that the same bulb is used through the full cycle?
Google Philips CDM860/V/O/4K/EA. Be aware that they're avail in both BT37 & the larger BT56 envelopes. They require old school transformer based MH ballasts. Opinions as to their usefulness seem to vary quite a bit.
FlyinHawaiian
Member
did they stop making the 250 and 400 watt retrofit cmh bulbs? is it just phillips that stopped making them or are there other brands still making them?
Philips quit making 250 & 400w CMH retrofit lamps for HPS fixtures. They still make 205(210?) & 330w CMH retrofit lamps for 250 & 400w MH fixtures.
GE makes a 400w CMH retrofit lamp for HPS fixtures-
https://www.1000bulbs.com/product/57200/MHS-040093295.html
It is *not* rated for use in open fixtures.
There are probably others, as well.
I've had good results using the Philips 330w for seedlings & veg, plan on doing more of it. I have no experience with the others.
squarepush3r
Member
Can vouch for Welthink products, have been using them for over 4 years, very good quality/prices/support. Haven't tried their CMH yet but I would absolutely recommend their company. They have offices in Virginia also so its not purely dealing with Chinese company.
Here is their pricing also (may be 5 months old)
315W CMH bulb Philips CCT=3,200K, CRI=90, 33,000LM, 20,000H US$89.00
315W CMH bulb
Philips CCT=3,000K, CRI=90, 38,700LM, 30,000H,
Used in enclosed reflectors only.
US$92.00
MH Electronic Ballast
For Philips 315W CMH lamp. 120V/240V. Sealed. 3 years warranty
US$96.00
I am not sure if these prices require a minimum order or if there are any other special requirement for these prices, but it is the wholesale pricing. Its the same ballast that Cycloptics resells I believe for $225, and Welthink even has a basic reflector for like $15 (compared to Cycloptics specialized one which is about $300 but theirs is custom made probably a lot higher quality.)
Here is their pricing also (may be 5 months old)
315W CMH bulb Philips CCT=3,200K, CRI=90, 33,000LM, 20,000H US$89.00
315W CMH bulb
Philips CCT=3,000K, CRI=90, 38,700LM, 30,000H,
Used in enclosed reflectors only.
US$92.00
MH Electronic Ballast
For Philips 315W CMH lamp. 120V/240V. Sealed. 3 years warranty
US$96.00
I am not sure if these prices require a minimum order or if there are any other special requirement for these prices, but it is the wholesale pricing. Its the same ballast that Cycloptics resells I believe for $225, and Welthink even has a basic reflector for like $15 (compared to Cycloptics specialized one which is about $300 but theirs is custom made probably a lot higher quality.)
LargePrime
Member
http://www.ebay.com/itm/321257284529
data sheet
http://www.songle.com/en/pdf/2008414165561000.pdf
277V 10A inductive, 30A 240V relay with 5V control. 2.65$
240AC 2HP and 120VAC 1HP rated too
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I would be very doubtful of that relay's ability to match those specs. It simply doesn't have the mass necessary to handle the current.
LargePrime
Member
I appreciate your honest opinion sir.
In my experience they are similar to automotive relays of even larger ampacity and working with DC (More one directional arcing).
e_24
Active member
So I had purchased a 330w allstart whichworks fine. I then decided to purchase another, but 1000bulbs was out of stock so I purchased elsewhere. When I recieve the bulb from th other vendor, I was about twice the size. Really. They both operate on the 400w ballast, bit the bulb is significantly bigger. More looking like a 600w unit( I know they don't make them). Was there a change between jan 2014 and august 2014?
330's that I purchased last year were ED37 format, the same as many MH lamps from 400-1000w. Like this-
http://www.bulbs.com/espec.aspx?ID=17170
I believe you. Philips seems to just change things because they can. I'm sure they have their reasons, but that doesn't mean they'll tell us what they are. It's just happy coincidence that the 330's serve our purposes, as they're intended as money saving replacement lamps for 400w MH commercial pendant luminaires & outdoor pole mounted fixtures. Virtually all of those are designed around ED37 geometry. That's true of grow reflectors, as well.
LargePrime
Member
Oh Google, keeper of secrets, what do you say????
http://www.lighting.philips.com/mai...mps-with-allstart-technology/productsinfamily
that 330 is available in 2 different bulbshapes. which did you ask for? ED37 or ED28
side by side comparison http://goo.gl/r5zHb2
http://www.lighting.philips.com/mai...mps-with-allstart-technology/productsinfamily
that 330 is available in 2 different bulbshapes. which did you ask for? ED37 or ED28
side by side comparison http://goo.gl/r5zHb2
Hi there,
Could anybody of You, gentlemen, tell me if CDM lamps could be used with GIB PRO-V-T power supply? I am using 70W lamp with electronic psu at the moment and would like to switch to little stronger 100W CDM bulb, but i have only this GIB ballast.
Is it safe?
Greetings!
Could anybody of You, gentlemen, tell me if CDM lamps could be used with GIB PRO-V-T power supply? I am using 70W lamp with electronic psu at the moment and would like to switch to little stronger 100W CDM bulb, but i have only this GIB ballast.
Is it safe?
Greetings!
If you have a 70w ballast, then you need a compatible 70w lamp. See the label on the device.
Both Philips & GE make 70w CMH in various configurations. I have no idea as to their suitability for horticulture. Google "70w CMH".
e_24
Active member
So I guess my question is, will both bulbs work in the same socket?
It seems that the ed28 is a slightly better bulb, or am I reading that comparison chart wrong
