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I was just reading over this thread here: https://www.rollitup.org/t/estimating-lumens-to-ppf-or-lux-to-ppfd-for-cxbs-for-a-given-color-temp.902597/#post-12416669 If I understood this correct: LUX reading ÷ 1000 x 15 = PPFD? I'm going to have to study up again on these terms PPFD, PPF, Lux...

The chrome plated knob I like better, nice quality. But for the practical purpose of ascertaining a 50% luminosity the other works for right now. I used this app that uses the light sensor on the iPhone to take a measurement of the Lux/FC (though PPFD is the preferred measurement?). The...

Okay, will stop spraying. Thanks @Airwalker16, CobKits, won't be so manic about it :weed:

Ruh-roh. This little gal made it out today but her cotyledons have yellowing spots on them. I turned the light back down to 50% and hoping that at such a young age popping out, that maybe this is due to the light bleaching it? I hope that is the case... Also, I've been spraying a bit of...

Oh no, not at all Six9! I know I said earlier about keeping it on the topic of the thread, but I kinda realized that this being my first grow I also have a lot of other questions as I go along. I am really appreciative and grateful to you and everyones' input. Thank you for sharing this!

This question is for Robincnn and well, anyone who has worked with this particular light. The rope ratchets along with the wires that connect to the light do not give me much room for raising as can hopefully be clearly seen in the picture. My tent is only 160cm (5'2") unfortunately and I may...

Update [09/10] - 2 seedlings have sprouted from the soil this morning. Two more are about to come up. 5 out of 6 had germinated and I set another out to germinate yesterday, hopefully by tonight or tomorrow. Light is currently set to roughly 75% luminosity @ 60cm (28") height from the rim of the...

Thank you Six9 for the thoughtful input and suggestions. I will experiment here today. :grin: I started the germination process last night so will be hopefully adding some updates and getting back to the focus of this thread shortly...

Hi, directed at the OP. From what I know about compost teas and EM is that you do need some source of food for them on a longer basis for them to really flourish. You are correct in your postulation as to needing to keep them fed. One solution would be to keep a regular feeding regime with more...

So you are saying I should get another fan for one of the intakes and make it an active intake not passive? I was thinking more about blocking out light when I asked. The Velcro screen could be open I guess, though not sure how effective as it sits right up against the wall (light may become...

Hey, kinda feel silly asking about this now. I don't recall going over much about this or seeing much on it, but how do most people set up the intake ports for air to be pulled in? I have one of the "sock" ports near the bottom that has the electrical wiring passing through which is open. The...

Yeah this being my first run, I'm going to only be using the one Photon. I have another @ 80CRI, but mainly due to some current restrictions and issues (regarding the 2x4 tent), I cannot do a side-by-side comparison at this time. This was mainly for the people here and for Robin's sake (I like...

Thank you Airwalker16! I felt like 6 wouldn't be much of an issue...

So, finally getting the tent set up... For some personal reasons I cannot do a side-by-side comparison at this time of the Citizen 1825 80 + 90 CRI, which was my original plan in a 73 x 134cm tent (2x4ft), sorry Robincnn! I will hopefully be able to do that in the coming months for people here...

NapalmD, looking forward to the updates on your flowering with these lights. I got 2 I'll be setting up to do a test run with grow journal soon enough.

Thanks BM9AGS and Hybridway for the suggestions. I think I am now going to move forward on some Northern Grow Photon 180's. Definitely like that they are a more affordable option than BD. I would like to do a whole DIY light console at some point but right now I need something a bit more plug...

Hey Thanks kmog33 for this grow journal. I have been researching LED's and have narrowed down my search to the Northern Grow Lights Photon 180's or possibly a Black Dog PhytoMax 400w. I am planning on a 2'x4'x6.5' grow tent set up and would need (2x) Photon 180's. I am also really interested...

So what would be your top 3 picks then BM9AGS?

Hi, I'm fairly new to RIU and I am reading through as much info as possible (including reading through the back pages of this thread) regarding LED's. I'm planning a small grow tent set up. I am thinking of getting an AgroMax 2x4 (28.75"x53"x78.75") tent. I am concerned about the heat as where...