Cirrus 400TL LED Grow light

  • Thread starter XxTheWolfxX
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XxTheWolfxX

XxTheWolfxX

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Make and Model: Cirrus 400TL
High bay warehouse / greenhouse horticultural lighting fixture with ample head room
Power draw at wall: 433w
Diodes used: 499 per board. 998 per lighting fixture. Top bin 2700K & 4000K Samsung LM301H Diodes, Osram 660nm Deep Red, Osram 730nm IR and LG 385nm UV. Kelvin of 3150.
LED driver: Inventronics dimmable with chilled led dim pods.
At 21-22w/sq ft: ppfd 1500-2200 @ 30”


This light never made it to retail as Cirrus LED made a business move to liquidate their LED grow line and concentrate on their high resolution LED display pods and hubs. These lights as you can imagine didn’t last long at the liquidation price of 70 / unit. I was lucky to make it to their warehouse in Portsmouth, NH and pick up 10 of there 400TL’s and 2 of their reflex UV light supplement bars. The only place I know you can find them still is eBay for 275/unit which is still a bargain if anyone is interested.
 
Dank.in.Donuts

Dank.in.Donuts

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How well do the or LEDs for that matter work for your grow
 
XxTheWolfxX

XxTheWolfxX

41
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How well do the or LEDs for that matter work for your grow
Very well..most people that have issues are fresh from HPS and don’t have their environment on point..Most LEDs do not emit a lot of IR.. HPS has a lot of IR. So it’s important to monitor your LST and adjust your ambient temps accordingly, with my LEDs and air circulation my LST runs .5 to 1.8 degrees cooler then ambient when the plants are off to the races and are not stressing..So I have to run my ambient warmer then I would using HPS...I also notice under high performance LEDs that the plants generally need more MG because of the higher rate of photosynthesis that is occurring..for me 75-90ppm of MG is the sweet spot in my hydroponic reservoir, for soil a light palm full of epson salts every 2 gallons of soil is a nice boost of MG..epson salts also contain quite a bit of sulfur which is a added benefit for terpene production..one draw back is you gotta constantly adjust the hanging height during your grows.
 

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