Anyone out there have any experience with the Mars TSW 2000? If so about how far do you have your light away from the seedlings and at what percentage?
Being a white light I use a lux meter as a guide. I aim for 7000-10,000 for seedlings, achieved from light 10 inches away at 25% power.
I slowly increase as the growth rate slides up, taking it from 10k to 15k in phase 1 (12 inches at 50%}, ending 24" on 90% for last 2 weeks before flower. Leave height at 24", turn to 100% and allow plant to stretch to 18" below before moving the light to maintain the canopy distance
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I’m guessing you dont have lux meter… start at about 36 inches if it dosent dim and if they start to strech bring it down a couple inches untill the nodes get closern(the space between the leaves) if it gets over an inch to inch and a half lower the light)…its gonna take some time to get this down as theres jot a 100 way to do it …strain to strain things can differ ecspeciall indica to sativa for this matter
Thanks. I am ordering a lux meter but I am confused on their effectiveness on led lights. Some say they work others say they don’t. I haven’t started my first grow yet, trying to get as much information as I can before I start. I would appreciate any assistance you could give.
Appreciate the input. I’m a little confused on what the pix meter will work on and what it won’t. But if it will work on these lights I will definitely invest in one. Thanks!!
Lux meters are good for white light… Blurple or coloured LED’s require PPFD readings, as lux is no longer a true measure of photon flux at that point. With white light, be it LED, MH etc… Lux is a good measurement.
Hou don’t need to buy a separate meter… If on android, download an app called “lux”. It uses the light sensor on the front of your smart phone. It’s not “100%” accurate, but +/-1000 lux is neither here nor there once you’re out of the seedling stage
Even white light is a poor way to be quantified in lux… especially led … best way is to find dli ppfd in all light as a bench mark it’s a level that can be manipulated with dimming distance and time