499.99 us
This is an excellent DE fixture.Can someone tell me if this would be a better option over the Chinese ballast? It's a 1000w low frequency square wave de hps system that is dimmable to 600w. It is only available for pre order right now though
http://revolutionmicro.com/revolution-products/
Hey thanks for the reply! What I wanted to know specifically is if using a 1000w square wave ballast with the new 630w DE CMH bulbs dimmed to 600 would be a better option then using a 630w square wave ballast specifically designed for the DE CMH but it is a cheap China import ballast. The 630w bulb says it can be used with a 1000w high frequency ballast but some users may encounter a shorter bulb life which I would expect. But this de fixture i put the link to is a short wave low frequency 1000w ballast the first one i ever heard of, so I'm just wondering what would give me the best results or which one would bebthe better idea, the 630w Chinese ballast specifically made for the 630w de cmh bulb or using the 1000w short wave HPS ballast dimmed to 600
I can't recommend the 630W unit. It's not better than 2 315W CMH lights, if for no other reason than inferior light distribution.
Good point.
So you would still recommend 2 315w cmh over 1 DE- 630W CMH (not the double 315w bulb unit,)
Yes I would. In fact, two 315W CMH lights would produce about as much as one HPS thouie, quality would be better and cooling would be much less of an issue.
You think so? Assuming a 315 covers about 3x3, 2 would then cover about 6x3, for 18sq/ft. You would have two bulbs to cool. A DE CMH would probably cover a little over a 4x4 for a very comparable footprint in square footage, with only one hood to cool. You don't think the DE CMH would produce comparable results? Why? I'm not necessarily disagreeing, but I am curious as to your logic. I fully intend on using the DE CMH when I find a US company making the LFsq ballast, but I'd really love to see the actual PAR readings on it first.
Two light sources are always better than one for distribution.
I thought it was PAR that was more important compared to the lumens for plant life? I have looked into some diy cob set ups and if I had a little bit more technical know how I'd try to put one together myself but unfortunately I'm pretty sure I'd just end up starting starting a fire lol
I just got an email back from GC they are releasing thier 630q square wave ballast in November
Agreed but it would cost me less for this 630w double ended set up then a 315w sun system so this makes way more sense for me in canada anyway to go for the 630w de cmh. I got an email from GC today that stated they make as much heat as a 600w de hps and and should be kept as far as as 1000w from the plants due to the high PAR output and on the conservative side will cover cover a 4x4 footprint with ease. Just for anyone curious. If the 315w sun systems were half the price of the 630w de cmh set up it would be a no brainer to get the two 315 for better light spread but I'm not paying more for 315w then I would for 630. Maybe if i lived somewhere with ridiculous electricity charges it would make more sense to go with a 315w maybe
I have considered this option as well the only problem i had other then not knowing about the ballast quality was it would cost $330 canadian (for the kit at growers house $167 u.s. plus 80 u.s. to include a bulb) plus another 150-200 for a decent reflector up here so about 500 which is great but i would need two to cover my area where as I would only need one 630w de cmh, although two would give me a slightly larger area (3x6(18 sq ft)vs 4x4(16 Sq ft)) but i don't need any more. If I could find an appropriate double bulb reflector then that might be the ultimate solution though. I will maybe see about going that route. I guess maybe it will come down to intensity and spectrum of the de 630w vs the dual 315w if i can find a double bulb reflector. Thanks a lot for all your help and experience I appreciate all the help while im trying to learn.
