I've always read that high frequency ballasts are bad for CMH lights? Not 100% sure on it though. I'm not a DIY'er.Im now think about to make a CMH400W in E39 base to let you guys run with HPS ballast(high frequency), sounds good?
Hi guys and happy 4/20...I've always read that high frequency ballasts are bad for CMH lights? Not 100% sure on it though. I'm not a DIY'er.
I kept it around 83. Lights in a closet with a fan and the door open. It's about 8 degrees hotter than the outside room temp. I will top early next time I grow sativa.She sure did stretch a ton Turbo! Did you find heat to be an issue with such tall growing plants?
they said because they are unable to design the CMH that can work on HF ballast, also to sell LF ballast is good for their revenue.I've always read that high frequency ballasts are bad for CMH lights? Not 100% sure on it though. I'm not a DIY'er.
the idea is use hps ballast to drive CMH, only change the bulb… save money on a separate ballastHi guys and happy 4/20...
They make a "conversion" ceramic MH bulb that uses mogul base and runs on MH ballast. I wouldn't try running a 315w on a 400 ballast though...
JD
we will narrow down the condition of usage, that helps user to avoid accident but not everyone read the instruction and do things properly.Just be careful. I've heard of bulbs being fried from improper ballasts, and most cmh bulbs aren't cheap to replace!
Just got some new gavitas for sure let us know how it goes. Are the bulbs jacketed if not you might want to order a shield from growers choice it’s just a glass tube that fits around bulb to prevent fire on bulbs not rated for open fixture use. I run my de 630 bulbs in acde hoods because was worried about it after saw a post where one of the growers choice bulbs caught someone room on fire.For what it's worth to anyone, I got some samples from @GoBrah .
Sent me 2x 1kw cmh bulbs he claims should run on my de gavitas. I have not tested them yet as I'm waiting for my next run. But they were sent out at no cost and quickly.
In my opinion some of these lighting company’s are taking a big liability releasing bulbs without much warning they are not open fixture rated. Growers choice sells a fixture to run their 630 and 1000 cmh and it’s high frequency and I don’t think it comes with the safety shield. But it’s not just cmh the mh de bulbs can be dangerous as well. I know growerchoice makes a shield you can use and I believe nanolux double jackets some of their bulbs.Exactly why you would want proper ballast use that matches the bulbs you are using. New cmh bulbs use low square wave ballast, not digital ballast like gravitas. Gravitas are damn good for hps/mh, kinda risky for cmh tho. IMO
The DE bulb i've sent to you is thick quartz shell design, we've tested and it holds the arc tube explosion.I honestly have no idea about the jackets or if @GoBrah 's bulbs have one or need one.
I got the growers choice 315's (se) and just plugged it in an let it fly <shrug> I dunno. Did the same thing with the 1kw gavitas. Someone clue me in if I'm fuckin up.