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Short answer is yes, but be careful. You need to match its wattage and spread really well to your main light; dim down mains and you need to have a way to remove some incandescent. You can do this with dimmable halogen spots aswell if you want more control and less watts per spot. The spectrum...

I would defo try to use some kind of sinking tbh, even if just some 3mm alu sheeting. Maybe 40-50w with no sink and some airflow? Get a ir thermometer and measure the back of the board. +50C is too high for myself.

If i understand the study correctly: nor output nor total watts of uv light; measured uv intensity at cannopy level. Nice study but a lot to chew thru, and some rather strange stuff: like no mention of what light or spectrum they use for wither main light or uv (though ratios; but uvr8 gene uvb...

Inknow what youre getting at but the plant responds to blue light in relation to the rest of the spectrum: turning up your light wont change those levels only total intensity. Generally in studies increasing 450nm blue light have sometimes given a bit higher thc % but only as an effect of...

Studies seems to indicate uvb, specifically around 280nm but its almost impossible to get that without getting a bunch of uvc which will mess with the plant bigtime. In practice ive seen people do it both with 285nm leds (very expensive and low output) and uvb flouro tubes; but the pure uvb...

I disagree but only a bit; ive seen better trichomes over standard led growlight with uva only myself but it doesnt seem to translate to higher thc numbers in tests in most studies. Also uvb can be very extreme for the plant, you want some uva to strengthen the plant a bit to be able to take the...

There are other ways to add co2 without burning; drawing air from living quarters (youd be surprised how much one person generate) or even if your water is gas heated you can draw fron that area. Ive even heard of people who just kept a a rabbit or 2 in a small cage in the grow room; they have a...

Which rev of blackdog ? Theyve been updating and are now using heavily supplemented white for their new gen. they have somewhat low efficiency but about 50% better than what they were a few years ago.

Yeah, K lockout would kinda mean tox on the cal or mg side :) happy growing, check out those vpd charts it works as long as youre still reading your plant. My fave is vpdchart.com, it lets you set the leaf temps as well as air temps. ,

Id agree on removing blue and maybe even spreading it out a little for the next time. Blue is useful if you wanna control stretch but will not beneficial for yield. The "super praying" leaves indicate too much light usually, leaves let light thru to second level and limit exposure. Also the...

Wellgrown 1200ppfd bud would probably have better bagappeal than 800ppfd grown bud. But will be much harder to grow, dialing in nutes and environment. Just upping lightlevels without much other inputs would likely not give the results you want. Cooler and dryer environment at late flower would...

One thing to keep in mind when playing around with CO2 is that its a factor closing the stomata: higher CO2 lower transpiration. This means your vpd calcs may get thrown a little bit off. It makes it even more important to keep one eye on the numbers but your main eye on the plants: you should...

No, K being locked out. But im not 100percent, i forgot this is soil. Calcium and mag are K antagonist. Is there big temps difference between top and lower cannopy? Or rh difference? Swinging environment means the transpiration, and thus the rate of nutes going into the plant, swings widely and...

I dont think this is a meter or spectrum problem. Could it be K lockout? Its fairly common when adding too much calmag, and if your plant is in too high vpd its likely to overdrink and get too much nutes- causing lockout of K; yellowing and burning starting at tips. The par meter response curve...

Hey Mac, let me know if you need some help. Please point out (and link) any parts you wanna work with. Main thing is to do a good driver/led match. Thx for the mention c2g :)

With removeable drivers: i hang them beside the cannopy sorta where my cannopy fan can hit them. Air clearance on all sides and vertical position is favorable aswell.

Hey buddy :) Can you bring down EC aswell? Im trying to figure out if theres any way to get water down to "good enough" as id have a hard time doing RO at home.

In general: water that moves is usually preferable to water thats been sitting still, it may create zones of low oxygen where you get bacteria you dont like. But if continually refilled theres some movement. And high mineral water: if you keep refilling your mineral values tend to go up. -...

Yes thats the easiest thing to test first. Heating mat under pots (thermostat is a must have! You can boil the roots if too much) would be my nr 2. I wish they made pots with built in heating cabling, would be narly. Cfl is not an incandescent, has more visible light and less IR than...

Theres these heat blankets you can try to put under or maybe around the pots. If still not enough the ceramic heaters are a good option, a buddy of mine uses them for winter ledgrows to great success. Id start out small, not sure if they are dimmable. Another protrick is extract the bottom...