Hortilux Ceramic HPS - Total trash?
- Thread starter skoomd
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The high chief
Well-Known Member
Look close U can see the heads
growin-Jables
Well-Known Member
As with every light I an sure there is a learning curve to using it. I had some embarrasings results and yields my first go around with cmh. But after I realized that having the light further from the canopy instead of at its minimum recommended mounting height , for some reason my yields and quality just shot up. Learned how to feed at the correct rate at which the plant is metabolizing . As with all lights they all cause different rates of growth in different phases of life. So thT directly effects that amount of food it's taking in and how often
Deltagreen
Well-Known Member
HEY growin Jables, what method of growing are you doing in your tent? Also what size fan do you have running?
growin-Jables
Well-Known Member
I tried running a scrog net this time around. which will be the very last time I do a scrog. Plant branches are skinny and not nearly as sturdy as when I use the lst method instead. I usually top once at the 4 node. Leave nodes 3 2 and 1. Then wait for the branches to get some length to them. Then I will start training the branches through flower. im just using 4 inch inline fans for intake and exhaust then I use 24 inch tall tower fans for inside my tent.
CannaReview
Well-Known Member
Well this isn't weed but the Hortilux 315 hows awesome basil. These are last week and they're way bigger this week although I haven't been watching the PH so there's some calcium deficiency atm.
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cincity420
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this chart confuses me. ive always been under the impression the closer you can get the light to the canopy the better. this chart is telling me the ideal position is 36” from the canopy??Light penetration is a factor of both how many light sources there are (be it an LED diode, the reflection point from a hood/wall, a bulb filament, etc) AND how powerful the/those light sources are.
Nfhiggs made a great illustration of why more light sources = better penetration, so I thought id make an illustration of why the intensity of a light source also = better penetration.
This model is assuming a perfect enviornment where the inverse square law applies. The lux values are just for reference.
growin-Jables
Well-Known Member
Well not neccasarily....the idea is if you think of this way...take a shotgun for instance and point blank from 3 inches away from your target you pull the trigger. You will have a small impact site from being so close to target. Now back up 20 feet. Pull the trigger. Your impact site will now be even more spread out over the target because the buck shot had more time to spread out before hitting the target. The same ideaolgy works the same for lights. The closer to the canopy, better penetration BUT much weaker spread. The penetration will only be penetrating a small area vs raising your light to a mid range position and getting a bigger spread of light angles entering the canopy. This is exactly why I never ever run minimum hanging height. I usually have my cmh as high as it will go and I get way better results that way
Deltagreen
Well-Known Member
Hey growin-jables,
How far do you have your cmh from the top of the canopy during veg and during the flowering stages?
growin-Jables
Well-Known Member
I run my 315w cmh in veg at about 24 inches. Simce penetration isnt needed I can veg an entire 5x5 tent with just 315w. When I flower I switch over to my dual 315w bulb 630cmh. In which I mount it as high as possible from the beginning. Usually have about 40-44 inches between canopy. Then after stretching that distance gets to about 36 inches
Deltagreen
Well-Known Member
Nice, I have my dual 315w 630 cmh raised as high as I can for veg. It's my 1st time using this light and I can't believe how bright it is. I'm afraid I'll burn my clones if I go the suggested 20-24" most people say to. They been under the the 630 for 5 days in 6" rockwool cubes and they seem to be loving it.
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growin-Jables
Well-Known Member
Yeah I tried vegging under my 630. Stunted my plants growth. They gree healthy . But much slower
Think it's just to much for them but I'm sure others have had success
growin-Jables
Well-Known Member
Keep the lights like 5 feet away or more if possible.....trust me when I say these lights are intense as shit and put off mad uv. Its literally a mini sun in a tent and can even experience skin burn similar to a sum burn if you are I'm the tent long enough and are fair skinned. Trust me they will get plenty of light from that height. You could put it 8 ft high and I garunetee those plants would still veg just fine. Especially at that age where they dony need a ton of light. I would get a separate 315w whem you can afford and cut down on running 315w for 18 hrs a day. Kinda pointless electricity being used.. save your 630w for flowering. And I would reccomend using 2 3100k Phillip's for flower if your not already
Screw mixing kelvins for flower. The 3100k has juuuuuust enough red for flower imo. AMD get best results with 2 3100k
Deltagreen
Well-Known Member
Thank you for the advice. The crappy part is that I'm way over budget, I can get my hands on a 400w MH with a winged reflector. Do you think it would effect my plants if I was to swap out the lights? They've grown about 2" within the last 5 days since I started the grow and there's new growth starting all along the stem too. I have the light raised about 38" above the canopy that's has high as I can go with my 5x5x80 tent
growin-Jables
Well-Known Member
Honestly if funds are tight save your money. If your seeing new growth and there doing fine. At the worst you may experience just slightly slower growth untill that begin to gain some girth. And yeah just slam the light as high as it will go. Another tip/trick that I do is if my plants have grown to tall or I cant get my fixture any higher i just off set the angle of the fixture where it's not facing parallel with the floor. More of a 45 degree angle kind of if I need to back off some intensity. The beauty of grow tents is there highly reflective and will still provide plenty of light to the plants even at an angle.
growin-Jables
Well-Known Member
Nice set up by the way man very clean and functional I think your going to do just fine. You just keep me posted on your grow I'm always intrigued with other cmh growers. Curious to see how the mixture of fast vegging and quick maturing characteristics from cmh lights pair up with the faster growth and higher yielding medium of hydro or rockwood cubes. Im a Soil grower myself. Mainly because I grow for my personal use. SO quality is my absolute first and foremost. So much that if I'm not satisfied with a plant, i wony even bother trimming it. I just fine it up into shake for butter or what the eff ever. If it's not top shelf I'm not wasting another lungful if I can help it lol Just remember 30" max from canopy in flower. If you see some color Changing on top of the plants dont freak out. It's pretty common to see purples blues and red hues with cmh. But if you see bright yellow or any signs of bleaching bring it up to 36" and see if that helps
Lordhooha
Well-Known Member
I trying to veg with my 630 de cmh @ five and half foot to six foot. I’m thinking it’s too much and it’s throwing so much light down I might have to put one of my smaller leds in to veg for a bit longer. These things are insane. My test room is 8x8 and it’s just stupid bright in there temps are 77-80 though with no ac just exhaust and a fan.
MichiganMedGrower
Well-Known Member
I have my 315 in a 3x3 tent at about 4’ for my 2-3 week old veg plants. Just like I would have a 400w Metal halide.
It’s even a bit much maybe still at 4’. Mature flowers end up at about 18”.
Lordhooha
Well-Known Member
It definitely seems it will keep them much shorter if you want. However I think I’m going to be switching to leds for veg. Lumens alone in that room at 5 1/2 ft is a site to behold.
Lordhooha
Well-Known Member
I wish my ceiling in my rooms downstairs were taller I think it needs to almost 10 ft to use this for veg lol. I’ll give them a few more days an see how they respond.