THCFarmer.com
121,110 Members Log In Register
Log In Register

Over lighting??

  • Thread starter Thread starter Vexor1717
  • Start date Start date
  • Tagged users Tagged users None

Over lighting??

Vexor1717 77 Replies 6,328 Views
Page 1 of 4 · Replies 1–20 of 78
Vexor1717

Vexor1717

Posts
202
Reactions
120
Joined
Jun 19, 2020
Points
43
#1
Hello, about to set up my 3rd crop and had a question. Im finding higher watt lights than the ones I need. Im not sure of the specifics of over lighting but how much is too much?
 
#3
Vexor1717 said:
Hello, about to set up my 3rd crop and had a question. Im finding higher watt lights than the ones I need. Im not sure of the specifics of over lighting but how much is too much?
Click to expand...

The answer depends on whether you are supplementing CO2. Without that, too much is over like 1000ppfd I think. With supplementing, maybe 1500? I am basing this on cocoforcannabis guys.

When I put my two viparapectra full spectrum LEDs on my plants in a 3x3 tent, (150w real pull each), that was too much. So it's not that hard to do (they have a dimmer).
 
#5
I’m running 600 true watts (measured from the receptacle) in a 4x4 tent, with enough spacing over the tops of the plants, works fine...no par meter
 
#9
Anthem said:
Dropping down to like 28 watts per square foot with the strip type fixtures does not take much away from overall yield
Click to expand...
Yeah I'm a 30w/sq ft guy. Height makes a big difference so it can vary but 40-50w seems excessive to me unless you are hanging em higher for more even coverage.
 
#10
Milson said:
The answer depends on whether you are supplementing CO2. Without that, too much is over like 1000ppfd I think. With supplementing, maybe 1500? I am basing this on cocoforcannabis guys.

When I put my two viparapectra full spectrum LEDs on my plants in a 3x3 tent, (150w real pull each), that was too much. So it's not that hard to do (they have a dimmer).
Click to expand...
Yeah over 1000ppfd imo is to much without CO2.
 
#14
Ideally you want to know at which point the plant is getting its near maximum input, this can be measured...

The goal is the have maximum light at every bud site, via vertical lighting and horizontal.

as long as you know the intensity, you can keep increasing photosynthesis to 100%, from below 50%.. if your 9 factors are perfected.
 
#15
Beowuuulf said:
Ideally you want to know at which point the plant is getting its near maximum input, this can be measured...

The goal is the have maximum light at every bud site, via vertical lighting and horizontal.

as long as you know the intensity, you can keep increasing photosynthesis to 100%, from below 50%.. if your 9 factors are perfected.
Click to expand...
Someone has been watching Bruce bugbee. 👍👍👍

Photoperiod and intensity are also key factors. Basically DLI is what we wanna know. And when we need the most intensity is flower because of the reduced photoperiod
 
#18
Vexor1717 said:
Well, 300 is the lowest I can find for a good price with everything I want included (fans, veg/bloom settings etc.) Is it too much?
Click to expand...
What I was referring to was how you figured 300 watts. Many fixtures are sold with an arbitrary number, which unless you’ve drilled down into the manufacturers info, may not be the actual watts...IE In the past I purchased a 1200 fixture, it’s draw was only 240 watts...
 
Page 1 of 4 · Replies 1–20 of 78
Back
Top Bottom