Lux to par graph/conversion
- Thread starter SteakBags
- Start date
Did you tame those 1500w hps ???
Renfro
Well-Known Member
Yeppers, they are on light rails between the rows. Getting 1000 - 1100 umols at 22 inches in all directions on a horizontal plane perpendicular to the lamp. Thats the distance from the center of the aisle to the trellis rig on either side.
Get a cheap lux meter and use the numbers in relation to the plant health to give you your estimate about where they need to be. As long as the meter's readings are consistent it doesn't matter whether they're scientifically accurate at all if you think about it.
If you had a tape measure which was a few cm out, and used it to cut two pieces of wood to the same length, it wouldn't matter as long as you use the same tape to measure the two pieces.
My cheap ass amazon lux meter tells me 30,000 lux is good at canopy level in veg, and they can handle anything in their 12hr cycle. I don't give a shit if someone tests my meter and tells me the conversion is wrong because it's not relevant to me.
If, on the other hand, I need to know exactly what my light is putting out and I'm testing the efficiency of my fixture, then I'll need something better. But for basic measurements it's perfect for me and a lot more control than I'd have without it. It's a good guide for me and I'm glad I've got it.
But in a tight space focus on keeping it nice and stuffy and warm, and make sure the roots stay cosy in the night cycle. Get a nutrient with a good calcium base, add a bit of epsoms with your feeding, and use silicon as a part of every feed, and your plants will tolerate a lot more light than they otherwise would.
From that perspective the meter or your exact readings become less important than your environment. And so when you strip it back like this, you're left with reading your plants and adjusting your lights and nutes, just like you were with your HIDs.
If you had a tape measure which was a few cm out, and used it to cut two pieces of wood to the same length, it wouldn't matter as long as you use the same tape to measure the two pieces.
My cheap ass amazon lux meter tells me 30,000 lux is good at canopy level in veg, and they can handle anything in their 12hr cycle. I don't give a shit if someone tests my meter and tells me the conversion is wrong because it's not relevant to me.
If, on the other hand, I need to know exactly what my light is putting out and I'm testing the efficiency of my fixture, then I'll need something better. But for basic measurements it's perfect for me and a lot more control than I'd have without it. It's a good guide for me and I'm glad I've got it.
But in a tight space focus on keeping it nice and stuffy and warm, and make sure the roots stay cosy in the night cycle. Get a nutrient with a good calcium base, add a bit of epsoms with your feeding, and use silicon as a part of every feed, and your plants will tolerate a lot more light than they otherwise would.
From that perspective the meter or your exact readings become less important than your environment. And so when you strip it back like this, you're left with reading your plants and adjusting your lights and nutes, just like you were with your HIDs.