50000 square feet. Colorado Legal rec grow
- Thread starter Merlin34
- Start date
DesertGrow89
Well-Known Member
Merlin I recall your canopy receives 5000 fc, do you expose clones to the same light intensity and would you expose clones to the same level as plants during germination and throughout the first couple of weeks?
Merlin34
Well-Known Member
DesertGrow89
Well-Known Member
Reason I ask is because I'm germing some seeds in a tent and with a 210w cmh and light at the very top the canopy is still getting ~ 1600fc. So for the first couple weeks of growth and root formation do you recommend ~ 600 -1000fc?
TheChemist77
Well-Known Member
has anyone tried vegging under a reg metal halide 6400k then flowering under the 3100k ceramics? i wonder if the stretch in flower will be more with that than if vegged and flowered under the ceramic alone? my veg area has been covered by 6400k 400 watt mh then my flower room is all 3100k ceramic and stretch in flower is minimal..im contemplating switching my veg room to ceramic also but im thinking with both rooms at 3100k there will be no stretch at all.. also i wonder if seedlings being vegged under the 3100k ceramic will be more prone to being male than under the mh light.. i have been led to believe that seeds determine their sex by the conditions, ive always vegged with mh, a higher n based nutrient, temps between 70-78 d f, and ive always gotten more females than males. i did try vegging w hps and higher k nutes and higher and lower temps then i recieved either even numbers of male to female ratios or more males than in the mh higher n veg room. anyways i wonder if vegging seeds under the 3100k ceramic will promote a male enviroment? Or with ceramic light being more like natural sunlight will it be even better than the mh spectrum in promoting females?? any thoughts? should i continue vegging with mh or switch over to ceramic entirely??
rkymtnman
Well-Known Member
why not get the 4K lec light? it's closer to the 5K of sunlight
TheChemist77
Well-Known Member
why not get the 4K lec light? it's closer to the 5K of sunlight[/QUOTE
i have 1 of the 4200k ceramic bulbs but have been told that the 3100k is the only bulb that is agro and the agro is better..please read below, so i have never used the 4200k bulb.
315W Agro
315W CDL Agro is made by Philips Lighting, belongs to the ceramic discharge lamp (CMH) family, also known as CDM and LEC. This is specifically designed for growing plant indoor.
The 2011 Progress Report by Illuminating Engineering Society of America (IES) stated as follows: “Philips Lighting introduces MasterColor CDM Elite Agro 315-W T12 metal halide lamps for horticulture market. These lamps reported to support excellent Photosynthetic Photon Flux or PPF with a value of 1.9 micromole per second which is comparable to 600W high-pressure sodium.”
What is the difference between an Agro and a Non-Agro lamp
There is only one agro ceramic metal halide lamp, the 315W CDM agro by Philips Lighting. There are other versions of 315W as well as lower and higher wattage ceramic metal halide lamps, however, these are not agro lamps. The major differences between agro and non-agro lamps are as follows: 1) Light spectrum, in particular, red and blue parts of the spectrum in agro lamps are tailored and optimized for growing plants indoor; 2) UV part of light spectrum in commercial lamps are minimized.
The following spectra clearly depicts that compared to Philips non-agro 315W/930 and 315W/941, the Agro 315W has more red (51% of total light energy) and less green and yellow parts of spectrum.
GroErr
Well-Known Member
There's only 2 kelvin colours regardless of form factor for the Elite Agro bulbs, 4200k and 3100k. I've heard the same thing from advancetech and the opposite from another vendor claiming that the 3100k's were better. imo either will do but to get a true reading you should test them yourself. From experience I don't take advice or accept opinions from someone trying to sell me something as it's usually skewed towards whatever they have in their inventory.
Drew303fullsun
Well-Known Member
I would definitely switch it all over completely if you can afford it. Your plants will be stronger and healthier going into flower with no transitioning to the new light. It also makes it so you have two rooms to veg and flower in so you may not need to move plants around at all depending on your situation. If your on Instagram check out homebrewer420 and guyforgot. They run the same lights we do on a large scale and could answer a lot of questions.
rkymtnman
Well-Known Member
advanced tech had both when i spoke to him so i figured his advice was from experience. the hps retro white i have is 4K and i've had great results with it.
Merlin34
Well-Known Member
Actually I have no idea of the FC for my smaller plants, I just transplant and into the veg room they go. I can meter it and check. They're 8' from the bulb though. So my guess would be somewhere around 2-3k.
Colorado
Merlin34
Well-Known Member
I popped about 100 seeds a while back under the 4k lights. High N nutes, temps between 72-78. Got 75% females.
Colorado
TheChemist77
Well-Known Member
thank you for the info.. have you or your company guys did any testing of the 3100k and 4200k bulbs to see any differences in both veg and flower? also you guys only use phillips agro bulbs correct? i know alot of people are now testing the ceramic lights and wonder if any real tests have been performed on both the agro and non agro bulbs? i mean we all know that the higher k bulb would be more of a veg bulb wile the 3100k would be more for flower but either can be used for both veg n flower,, i just wonder if any real tests have been performed and the results?
Merlin34
Well-Known Member
We have not done side by sides, though friends of mine who make 315s want me to do one. I might set up one 16 light section with their lights. They use agros. The lights I have now use T9 elites. There's definite reasons why I think the T9 elites might be better than the agro version...
Colorado
Colorado