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Thx, can I ask what DLI do you use for autos?

Hi thx, one question. When I run CO2at about 1500ppm, for autoflowers. Can I keep lights ppfd about 1500 for whole 20h photoperiod? General question could be if I have to lower light amout for autoflower if i light them 20h instead of 12 h for regulars. Thx. Joe

C Carbon is not so bad as silica and even azbest for lungs (silicosis azbestosis). But not in coal miner but miners in mines where silica stones are mined. Or worse - workers who worked in azbest factories in past. Nowadays these factories do not exist anewhere in world i hope...

And maybe more light :-). Good job, keep going!

Nice photo!! So emotional, it bring to me memories from years when i studied :-) I want box about 70*70cm (cca 2.5 *2.5 feet) walls covered by orca foil (great reflextivity) i had 2 diy ligths from vero 29 5000k for grow and 3000k 90cri for flowering, automated by diy arduino controller (temp...

You have got about 1.6m2, have 720w lights. I estimete efficiency of your lights about 2umol/j (in best case, maybe worse) it gives us in best situation little bit under 900 umol/s/m2 in best case. It shold be ok even without co2 if you handle all other conditions… I love DWC, especially...

Hi, unfortumately no, it is nearly useless for growing. I recommend you this webinar for beginning. Usefull par meters are not so cheap, but there are some other ways. I found test of “photone app” - on Iphone it gave pretty similar results like apogee instruments par meter. Not ideal for...