Heating the other rooms when lights are off it's cold in Canada! Do you think this is ideal? If not what do you suggestWhats the reason for circulating the air between the rooms?
Heating the other rooms when lights are off it's cold in Canada! Do you think this is ideal? If not what do you suggestWhats the reason for circulating the air between the rooms?
It could be fine to do what you propose, at least as long as you don't have issues with warmer humid air mixing with cooler air and causing high RH%. With this chart you can see that air @ 82.4F and 50% RH contains 12.05 grams of H2O per kg of air. Now that same air cools off to lets say 73.4F the RH% would end up between 65 and 70%. In later flower those levels could cause issues with bud rot. Temperature and RH% fluctuation can promote powdery mildew as well.Heating the other rooms when lights are off it's cold in Canada! Do you think this is ideal? If not what do you suggest
It could be fine to do what you propose, at least as long as you don't have issues with warmer humid air mixing with cooler air and causing high RH%. With this chart you can see that air @ 82.4F and 50% RH contains 12.05 grams of H2O per kg of air. Now that same air cools off to lets say 73.4F the RH% would end up between 65 and 70%. In later flower those levels could cause issues with bud rot. Temperature and RH% fluctuation can promote powdery mildew as well.
Great grow journal, I finally made it. Glad you answered the question about circulating air between two rooms possibly causing rh issue. I was wondering if it made sense to do it but really like your reasoning about bud rot.
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Ballsy grow for NZ.A couple of pics from New Zealand. Top, room 2, Just Hps 600, Bottom, room 1. About 20sq/m, Running 600's and Leds
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Gotta keep the medicine flowing.Ballsy grow for NZ.
Hey love your grow rooms they look so nice and clean. Does it drive you mad for the vertical hps bulbs to throw all that light on the ground? Compared to the LEDs for side lighting? This last cropI got in the oven I've been using LED side light and love the even size of bud all through the plants. I want to run vertical CMH between rows. But kind of mind fucking me to light the floor in the aisles. Do you feel the gain in yield from the side lighting is worth the loss to the floor? Or is it more an overall bud quality thing?Room B modification completed. 1500's on light rails, LED fixtures on row ends. Some new fans in the mix (ceiling).
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In-room 1 the tables are on wheels and give about a 20 inches to access. Also, I have a special chair on wheels that I can sit on to access the lower area's. Works well.how do you access the area for inspection, spraying etc? and how do you irrigate? Curious about the tables too, how they drain?
"Does it drive you mad for the vertical hps bulbs to throw all that light on the ground? " Do you mean the horizontal lights beside the LEDs? Because of how room 1 is designed using sog I don't get light loss to the ground. In fact, light penetration is more an issue as I'm only running 600's. 1000,s would give me better penetration. I can take some pic's under the less compared to the hps,s. In regards to the quality of bud, I see two factors. The terpene profile from the led's looks better, but the yield looks lower. Not as dense as the HPS's.Hey love your grow rooms they look so nice and clean. Does it drive you mad for the vertical hps bulbs to throw all that light on the ground? Compared to the LEDs for side lighting? This last cropI got in the oven I've been using LED side light and love the even size of bud all through the plants. I want to run vertical CMH between rows. But kind of mind fucking me to light the floor in the aisles. Do you feel the gain in yield from the side lighting is worth the loss to the floor? Or is it more an overall bud quality thing?
Use 55-70% of the actual watts drawn from your LED lights as you would use for high intensity discharge lighting. Don't go by the label- "works like 1000W with only 220W!!"- go by the actual draw, so the 220W would do a good job of replacing a 315W CMH, but not anything bigger."Does it drive you mad for the vertical hps bulbs to throw all that light on the ground? " Do you mean the horizontal lights beside the LEDs? Because of how room 1 is designed using sog I don't get light loss to the ground. In fact, light penetration is more an issue as I'm only running 600's. 1000,s would give me better penetration. I can take some pic's under the less compared to the hps,s. In regards to the quality of bud, I see two factors. The terpene profile from the led's looks better, but the yield looks lower. Not as dense as the HPS's.
Currently my main issue is controlling humidity and keeping an eye out for rot.
So what if a little bit of light is wasted, nothing is ever 100% efficient. Still, the gains far outweigh the cost. Keep in mind that the amount of light going down to the floor from the end of a vertical bare bulb is minimal compared to what is emitted from the sides of the bulb. I feel more light is wasted traveling along the aisle instead of perpendicular towards the plants. Still, the gains far outweigh the costs. A really cool idea I have is to make a reflector for the 1500's, something with a cone shape on the bottom where the end of the bulb is to send that light towards the plants and reflector material down each side of the bulb something like this >o< if you are looking at it from the top and the "o" is the bulb with the > < redirecting light that would otherwise travel along the aisle not towards the plants.Do you feel the gain in yield from the side lighting is worth the loss to the floor?
How wide are the aisles between your rows? I have found that since the light goes in all directions you really need some power to hit the sides of the rows with strong light. A 600 watt HPS works ok in my aisles, if I put three of them along there it would be pretty good but a 1000 watter really blows the 600 away if just running a single lamp in my aisle. Right now my thing is 1500 watt bare vertical HPS on a light rail mover. This allows the light to travel the length of the row instead of just hanging in the center. With the 1500 I measure about 1100 umol at the side of the trellis rig, of course the plants grow outwards towards the light and those levels increase rapidly as the plants approach the lamp. Therefore, if the light wasn't on a mover it would be too much as the plants grow out of the side trellis and towards the center of the aisle. In my case I am prepared to switch the light to a 1000 watt HPS should the plants end up growing too far out the sides of the trellis rig.I want to run vertical CMH between rows.
thanks, fat grow there, you may wanna show us closeups of the led section compared to a closeup of a HPS section ?A couple of pics from New Zealand. Top, room 2, Just Hps 600, Bottom, room 1. About 20sq/m, Running 600's and Leds
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About 2ft between rows. But I am going to tables so they will love around. So I wanna set the lighting up for that. I've been looking at the metal halid 400W high bay reflectors to adapt for my 315W because it reduces fixture width. A big problem with the LED frames is how much head room they take up its hard to hang other fixtures at the same height without running out of space. Keeping my lights about 30-36" above final canopy.So what if a little bit of light is wasted, nothing is ever 100% efficient. Still, the gains far outweigh the cost. Keep in mind that the amount of light going down to the floor from the end of a vertical bare bulb is minimal compared to what is emitted from the sides of the bulb. I feel more light is wasted traveling along the aisle instead of perpendicular towards the plants. Still, the gains far outweigh the costs. A really cool idea I have is to make a reflector for the 1500's, something with a cone shape on the bottom where the end of the bulb is to send that light towards the plants and reflector material down each side of the bulb something like this >o< if you are looking at it from the top and the "o" is the bulb with the > < redirecting light that would otherwise travel along the aisle not towards the plants.
I firmly believe, light the room and let the plants grow to the light filling it out. The most wasteful period is the veg / stretch phase as most of the light doesn't hit a plant. If that light wasn't there though there would be no encouragement for the plants to fill the space out.
How wide are the aisles between your rows? I
Get some pic's for you tomorrow. And will take some where the hps/led crossover occurs.thanks, fat grow there, you may wanna show us closeups of the led section compared to a closeup of an HPS section ?![]()
I’m using the growcraft fixtures and have scaled back the wattage toward the end as of late. Can’t say that I’ve noticed a huge difference yet but I’m comparing. Like most things it may end up being strain dependentHas anyone tried dropping from 600W to 400W coming into the last week or two before harvest?
Most rooms run 20 to 25 600's. I'm thinking of dropping them back to the 400W settings. Comments welcome.have no expectations, just curious to see and think you have a very nice showcase there.
btw. i do think it makes sense to go a bit lower the last 2 weeks otherwise you often have problem to get them ripe (foxtails).
depneds on the intensity youre running of course.
you don't want to reduce light intensity the last weekHas anyone tried dropping from 600W to 400W coming into the last week or two before harvest?