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lm301h and lm301b are exactly the same from my research the h was used to distinguish marketing materials essentially, catering to the horticulture market by providing outputs in micromoles instead of lumens. Green Gene said the same in Youtube video too but I can't recall which one.

^Exactly why I built a strip based lamp. That said, the 2 qb288's can definitely rock the 2x2. You won't have them at full bright which will allow you to hang them a little lower.

Yo in the past I had a slightly larger space but also more powerful lamps. 200w in this space (5sq ft) is 40w per sq ft. With about 29w per sq ft of leds (2x QB288 v2) in my last tent (3x3) I had more dank bud than I knew what to do with and so I have no doubt at all that with this setup I will...

Fabric pots were awesome when i ran a flood table

I just built a simple strip lamp for a 2x2. Feel free to check out my thread for details https://www.rollitup.org/t/my-new-hlg-samsung-2x2-photon-blaster.1008786/

I rescued a plant from pythium once and cut off more than that - no real ill effects other than the obvious

It's going well bc you're learning lessons. I can tell you are an old school member from the bubbleponics forum days as soon as I saw the bubbleponics in the thread title haha. Lots of lessons have been learned from those days.

We're all begging this is true

If you are accurate with your drill (or lucky enough to have a drill press) you can manage to just shave off the edges of the two fins. A couple of the fins got a bit turned from the drill bit but you can't even see it since it's under the extrusion and it won't affect anything anyway. I have...

@cobshopgrow Thanks man - 75w @Gond00s Hey man, I bought these https://www.amazon.com/80-20-Slide-Economy-T-Nut/dp/B00JF7AIEM/ref=sr_1_5?keywords=80/20+1/4-20+x+1"&qid=1584214566&sr=8-5 and from my local hardware store (think Ace) I bought 16 1/4-20 x 1" stainless steel screws (3/4" was too short)

Thanks for the link - I definitely thought about a terminal strip or adding a gland box. I never leave builds alone so who knows

I built a new lamp for my new 5sq ft tent (27"x27"). The goals of the project were to; 1) provide a relatively even footprint 2) incorporate deep reds 3) have a seed to finish spectrum and 4) crank out up to 40w per sq ft (~200w total). In the end I got more than I bargained for while also...

Thanks guys @Just Be when she's more than a runt and things start getting interesting, I'll absolutely tag you in the journal I start. @rkymtnman I feel you on the cost being small potatoes. My apprehension stems from just wanting less (not at all an objective approach, I know). We'll see

New to Waterfarm's here and left mine stock opting only to add additional holes at the bottom of the media bucket. I have a week old seedling rn and am on the fence about an dual outlet pump and airstone added. I'm more or less with @Just Be on this discussion but I've always valued your input...

Yield was about 12 zips of dank

I used a 260 v2 kit in a 3x3 and got amazing results, 5 plants

Yeah man that was my intent, that and to not have too many plants.

Best of both worlds kinda Pre-flower Harvest

I grow this way. Last run was 5 plants topped once each in a 3x3. Vegged for 8-10 days total, topped right after they’ve become acclimated to their new home, flipped as soon as they bounce back from topping.