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Hey guys, I have two questions. If a formula contains 49.803ppm of P, And all that P comes from monopotassium phosphate, 1. How many PPM of K are there? 2. How many grams of monopotassium phosphate is there? Thanks :)

Hey guys.... I'm looking to wire up multiple rooms with a number of different lights including the new spydrs, and custom plc strip builds. Both the fluence and the custom lights will be a maximum of 3A each on 240v. When wiring these lights up, whats the cleanest way to do it? I have one...

https://eyehortilux.com/grow-light-systems/led-240-r-grow-light-system/ 240w ufo style 4000k + 410nm, 450nm, 660nm, 730nm seems like a very similar spectrum to the chilled boards which I think are 3000k + 400 + 450 + 630 + 660 they are marketing it as a veg light but I don't see why the...

Ok so I have an autopilot 8-light controller that is wired 240v. This controller can be wired in either 120v or 240v. and it has female plugs for your lights that will accept either the 5-15p (standard 120v) male, or the 6-15p (standard 240v) male. I puchased a spydrx+ from my local shop and...

Ok so I just finished building my qb setup. 12x qb288v2 on 3x hlg-320h-c1400b (single fixture for a 4.3' x 4.3') 12 qb288v2's @ 1400ma should be 12*66.78 = 801.36w I've wired the power cords together, and I've wired the dimming leads together. I had a 25k ohm pot laying around so I wired it...

https://www.meanwell.com/Upload/PDF/LED_EN.pdf I was just reading thru the meanwell installation manual and I came across the chart on the 3rd page it lists the HLG series for "The maximum number of the LED PSUs that can be connected to a circuit breaker at 230V is shown as below" My first bit...

Hey guys i was wondering lets say there was an issue with your a/c so you dim your lights down just to keep the 12/12 cycle going, how low can you go before its not even helping you? Like if you had an hlg 550 light or a spydrx+ over a 4x4, could you dim it down to 50w and it would be enough to...

ok so I plan to run 12 qb288v2's over a tray for a theoretical maximum 800w. on a phone call with HLG he recommended to use 4 hlg-185h-c1050b drivers and run 3 boards on each in series. thinking about it (after purchasing the drivers) i was confused because I thought that it would only run...

hey why does everyone use angle alum for their frames? would two 48" pieces of 1/8" aluminum sag or droop in the middle if there are three qb's and a driver mounted to it? post #9 has a diagram

Hey guys, does anyone know how wire these things in the meanwell drivers? I cant seem to find too much info about it. I just watched greengenes video about the amelech controller... is it the same kind of thing? @Greengenes707

Hey guys, I've got a loose understanding of how this all works, just got a couple questions. I'm going to run 3 qb288v2 in series on an HLG-185h-c1050b, no heatsinks, just an aluminum angle frame. I'm putting 4 of these over each tray. (approx 4.5' x 4.5') I'm going to use the 5way wago's to...

Hey guys I remember there was a thread I'm not sure if it was on this forum or another one but there was a list that showed you how to replicate a lot of the common bottled nutrients on the market using dry fertilizer. I can't find that thread so if anybody knows what I'm talking about if you...

Has anyone seen or used this light? Seems impressive.... http://www.pllight.com/products/fixtures/hortiled-top/

I'm purchasing the helios 6 and it says use a 240v 50a breaker but what awg do I use to connect from that 50a to the helios6? Thanks alot :)

Anyone try doing this? Run 49w on each corner to bring ppfd up? Or maybe if you can angle them on the sides for deeper penetration? I can't afford to switch my entire setup but figure this is good start. Any real results with a setup like this out there?

Who uses this and at what strength?

in theory lets say we had a 4x4 with 16 cobs @ 1050ma giving ~980ppfd ABOVE one tray, pulling a total of ~588w in the other tray lets say we had a 4x4 with 16 cobs @ 700ma giving ~700ppfd and pulling ~392w, but lets say we add two cobs on each side of the tray, giving light to the lower...

i am using r-tech on my walls and ceiling but what do you guys do about the floor? i used the 6mil poly as a vapor layer around the entire room, floor included, but is there a relatively cheap easy way to throw some flooring down on top of the 6mil so i dont keep ripping it?

hey my final setup would be 9 cobs @ 700ma over a 3x3 so I want to buy the hlg-240h-c700b and 9 cxb3590s on it but I am going to do three separate bars. my question is can i buy the 240h and only 3 cxb3590s and run it @ 700ma each? and then later buy the other 2 bars and upgrade? or will it...

Lets assume over 4sq ft: Setup A: (4) cxb3590 36v 3500k CD on (1) HLG-185h-c1400B dimmed to 50% Setup B: (4) cxb3590 36v 3500k CD on (1) HLG-80h-c700B at 100% power 1. These setups pull approx the same wattage amount from the wall, correct? 2. Is Setup A just as efficient as Setup B...