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I'm seeing my 2 week old plants take a turn for the worse. A few of the plants are dropping very badly. I've been making sure to not overwater by waiting until the solo cups get to be around a certain weight before watering. It could be a nute problem/deficiency/ph lockout, I'm not sure. I...

Set up a dummy 30x24 box with some rigid foam shiny side in. Numbers look a better. second column is ppfd with open front... third with closed. Distance | PPFD | PPFD no front | ppfd 30" 625 20" 480 605...

Looking for 800+. Bet the numbers go up a bit once I get another 2 fixtures in there. Want to set up a dummy 2x2 and see what the result is with reflective walls.

Ill post this as a study in what not to do... I've done much better in the past. Haha

She's pretty bright.

Took some crude PPFD measurements tonight... using an Apogee SQ-120 and voltmeter. Highest current setting (@ 200W total), Eight 3k/4k alternating strips in a 16"x24". Unimpressed with the #'s so far, not sure of the correction factor for the SQ-120, but assuming x 1.0 Roughly center of...

yes, lowest setting. should be visibly the dimmest of all 4 settings.

What's everybody's schedule this year for starting plants?

Looks great. Solid, simple design. Hoping to fire mine up tonight.

popped 3 whitedawg x LBL ... transferred two that germinated from paper towels to soil two days ago, they are up and reaching for the lights already... The remaining seed looks DOA. Maybe I'll get lucky and end up with 2 females. Got 20 other seedlings though, so not a huge loss lol.

Thanks. Got a lot of 8020 extrusion, might as well put it to use. Tacked the driver to the side of one of the heatsinks with some thermal tape. Looks real clean, debating whether in should do the rest like this. More heat getting pumped into the heatsink probably reducing it's effectiveness...

Alternating 3k and 4k. Time to hack together some wiring.

You guys are way ahead of me, time to kick it into 2nd gear! Here's the start of my first panel (of 3 total) ... hit the heat sinks with some 240 grit, followed by some 600 grit. Probably going to use tape anyhow, so doesn't really matter. Going to mount the strips and wire this up and do some...

yeah... there is a small nub/button on the connector that you push in to release the wire.

Yes, That's the best/safest option. If a wire comes loose you're covered as long as all of your frame is connected electrically. This is what I'm using: https://www.amazon.com/gp/product/B06XT6LK7Q/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 Then just grab some pc power cables from ebay and...

yes... black and red to the strip. other end to AC. Yes you can run a bunch off of one power cable. You just need to size the wire correctly. I'm going to probably run 10 on one frame and they will all be tied together from one 110v source. You can use the 3 wire bundle, but one of the wires...

I'll have to reread this post again a few times, as I don't know much about breeding. I may pop the other 5. I've got a 3'x6' footprint for flower and 15 seedlings currently. figured id end up with 7 or 8 females in 3 gallon smart pots. I can increase that to 4.5'x6' to veg more plants if need...

Yes bagged...I replied above with my grow medium. Only did 150 ppm (if that) and will probably drop it way back to 75ppm or flush if the tip burn worsens. So far the burn hasn't migrated in a couple of days so I may be ok. I had thrips before months ago... I'll examine the leaves when I get...

Could be... I'm using ~70% miracle grow seed starting mix, ~30% perlite. Been using it for years successfully with hundreds of seeds (non weed). It's pretty mild stuff, npk is 0.03, 0.03, 0.03. Last watering gave them 150 ppm of fox farm grow big in RO water. I weigh the solo cups before...

What makes u say that?