I have seen one that has something like 4 arms. Each arm as a different spectrum bulb (not sure whether 660 is available) + it slow rotates like a fan. Last time I check it was $$$$$$$$$
Hahaha, yeah that's the Sunpulse thingy. It's the biggest joke waste of money scam there ever was. Sunpulse MH lamps are nothing special, unless you think the fancy box that they put the lamp in worth the $160 they charge for a basic MH lamp.
The different K ratings on a Sunpulse MH vary because of the different amount of yellow they have in the lamps. MH do not have any red beyond 600nm, that's why buds are always smaller under them.
Don't get me wrong, I use a Sunpulse 3k MH for budding only because I like the quality of the buds under MH and it's the only MH I knew of at the time of purchase that works with a digi ballast. I've been experimenting with some new brands of MH recently however.
The owner of Sunpulse is a jerk. The lamps are made in China and have extreme quality control issues. I've had to replace 3 of the lamps under warranty in the last year. The nice thing about them is the 2 year warranty however. I'm sure they can offer a 2 year warranty because of the unGodly prices they slap on them. I'm sure the markup on those fuckers has to be around 6000%.
I don't get the whole idea behind using 4 lamps that have different K ratings and are ALL the same kind of MH lamp. So, are they trying to tell us that adding more yellow and blue in varying amounts is going to create better growth? LOL Muahahahah. Buy 4 lamps to do the job that one does. That's what they want.
Ever notice that Sunpulse does NOT put the SPD graph on their packaging with all the fancy flowers and other hype on the packaging? Yeah, it's because they don't want the customers to see that the MH is nothing more than a basic MH. Once I get my spectrometer I will take a reading of a Sunpulse lamp so everyone can see what nonsense they are.
The glass is paper thin, the element inside turns to char and burns off leaving crap floating around inside the tube.
Yeah I use the 3k Sunpulse BUT NOT FOR LONG. It takes a long time for the plants to adapt to the shitty light spectrum they give off, but when they finally do, the buds turn out really nice. It's not like any other MH wouldn't work. There are a few other companies that make digi MH now.
There are also a few companies in the aquarium industry that have been making GERMAN MH for a long time and can be used nicely in digi ballasts. They don't even flicker on startup like pretty much all of the hydro store lamps do. There's always digilux. Pretty much the same thing as Sunpulse at 1/3 the cost. Same shitty design though.
I gotta stop. I could go on forever complaining about this shit. Grow stores are a big hyped up advertisement scam that calls you at home on a Sunday when you are just getting ready to eat dinner, or go to bed.
led even has more photons than hid. plasma surpasses led. unfortunately plasma is not in high demand. once it is the price will drop.