airedog
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Look up NPK on utube as silver foil is no good for grow rooms only white or black as silver doesn't rebound the radiation back of red light ☢A few years back i had a really bad year, rippers hit my outdoor, coming through my suburban next door neighbour's yard to get to mine; and, i used questionable clones from a source that i trusted and got a wicked case of PM. On the indoor, my wife was watching the grow while i healed from some knee surgery so the PM was well beyond the point of no return when i saw it. Tossed the UC system and retired the chiller (i'll see if i can replace the coil and any internal tubing/piping). I eventually disinfected the basement even going so far as to toss compromised framing, drywall and insulation.
Earlier this year i had a contractor buddy start rehabbing the basement space. I have a roughly 17 * 10 area with a tad over 7' of headroom. I have 8 duplex boxes in the space, each on its' own breaker as well as a dedicated 240V cct that runs a 4 outlet timer. There's a spare 240V cct that can be used for a mini-split should i choose to go that way. The space has been built as a sealed environment with boots around the electrical boxes and taped and sealed vapour barrier behind the bathroom/kitchen drywall walls and ceiling. Drywall has been sealed with Kilz Premium and covered with Panda plastic; there is also DuroFoam should i choose to cut the space down a bit. I'll use a UC4XXL13 RDWC system lit with (4) 640W adjustable spectrum LEDs; i need to lengthen and widen the bucket footprint by 1' in length and width in order to fit the LEDs array needs. I can run the room as a vented space and will do so until i'm comfortable with the new UC and lights, there is also a fuzzy logic CO2 and tanks ready to add-in when i go sealed.
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Seeds were started week of Dec 14; and went in rooting bubblers on the 31st.
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LEDs will be hung this week and I'll use a wort chiller coil to isolate my 1/3 hp chiller from the nutes to avoid contaminating the chiller should i have pathogen issues. I have oil filled heaters, domestic humidifiers and dehumidifiers that will run on humidity or temperature controllers and will monitor the solution strength and pH with a Blue Lab Guardian. Seedlings are 3 weeks old an in rooting bubblers currently but will hopefully go in the UC the week of Jan 11.
Gotta admit after having that horrible year in 2016/17 i was ready to change my name to O'Toole, fearing that Murphy was the eternal optimist. I'm amazed at how much has changed in the 3 years i've been dormant as there hadn't seemed to be huge changes from 2002 - 2016 (other than digital ballasts and DE fixtures). LEDs that you can flower well with as well as VPD and other concerns i'd blissfully been unaware of make me very grateful for the resources and knowledgeable people available here and at similar forums.
That sure looks like they could use some additional Calcium and Magnesium, FWIWHere are a couple of pictures from today;
Plants are bushing out as well as growing tall.
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This is a problem currently showing only on that LR plant; the one that had root issues; not sure if it's just a warning of a global issue for me though. To me, it looks like a nutrient issue, just not sure which one. Currently nutes are 920 ppm; 66°' and pH is 5.7.
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At 2.5 weeks in flower I was thinking the strech may be done and you may have enough room.2.5 weeks into Flower. Week 3 nutes had some additions and solution strength is currently 1310 ppm (700 scale); temp is 67°; and pH is 5.7.
Plants are drinking about 6 - 7 gallons/day. I've been adding in CalMag and that is probably part of the increase in solution strength from the changeout strength of 1270 (generally thought to be high for an UnderCurrent system). Leaf tips are white, so i want to stay close to this strength, but leaves still show that i may need more CalMag. I'll dial back base nutes next changeout and hit harder with CalMag. I'm also giving Microbial Mass Pro a try. Hitting them hard with Bud Factor X and they are starting to develop an aroma.
RH is running at 48% 4 hours into the cycle and ambient temps are around 75°; OFF cycle temps are around 70° and RH near mid-40s.
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This was the room on March 21
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There's no question that i'll be rolling and bending stems to get top branches to grow horizontally under trellis netting.
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