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Tupar, huh, never heard of her.. uh it, lol. So what's so special about this Tupar? I can't get it near me and shipping doubles the price. I don't know what the ratios are, but it looks like the only major diff might be this bio-char (never heard of it either, lol). Any idea what this...

I run what I call a modified Hempy mix, take 2 parts coir, 1 part perlite, 1 part organic soil and for every 5 gallons of this mix I throw in a couple of handfuls of manure and the same for worm castings. I've been doing this for a couple of years now, started with straight Hempy mix but then...

So did I buy the wrong stuff, or just over-reacting? That "single use" thing still bothers me, but then these new GHS data sheets are different from the old MSDS.

Sounds like I need a fucking HAZMAT suit and respirator just to use this, and don't do it in the house.:confused: I admit to being a bit overly cautious when it comes to such hazards, any advice from folks who've used this stuff?

Well been keeping busy last couple days prepping for possible flooding in our area, lots of rain here:cuss:. Hell, so far this year, while not the most in terms of total precip, seems like the most number of rainy days ever, it's rained every week since late spring almost! Welcome to extreme...

Thanks for the input, I'll check with them and see about that shipping price then. One thing I do keep seeing is sites advertising "tubes" of epoxy but show a pic that looks like this: This doesn't look like any "tube" I've ever seen, looks more like a packet designed for a one-time use, as...

Still waiting on my COBs and Driver, but got the aluminum parts in. I'll start work on that tomorrow, get the cuts made and then drop them by the welding shop. Btw, while sourcing a good/inexpensive thermal epoxy, I found some at a site called Newark.com, just $38 for 25 gms, almost bought...

My DJ Short Shortbread (13 regular seeds) all popped withing less than 48 hours, 11 look in great shape, two are a bit runty and gnarly, may not survive. But am thinking about doing a log, it's been too long since my last one and I find that when I do log a grow, I keep better records and the...

Update: Well after popping the 6 feminised Kurple Fantasy, I started noticing issues right away. Two turned out to have mutations, (one had cotyledons but no leaves) and on the other the cotyledons stayed closed (even after removing the shell) and after a week I pried them open to find the...

Yes, but what I'm talking about are LARGE retailers whose entire business model is aimed squarely at serving the needs of the cannabis grower, so that the only products they would stock would be those needed for this application. What I'd also like to see is some sort of menu/matrix designed to...

I think that's part of the issue, with standard HID lighting, the cannabis growers pushed the market and so some vendors evolved to strictly serve our needs, and I think the LED market has yet to do so. Most vendors offer such a dizzying array of choices due to a wide swath of industry demands...

Yeah I guess I don't understand why they didn't just put the dimmer on the outside to begin with as that seems easier to adjust, lol, but I suppose I can see why it might not fit in some applications. That is the problem with these things, there's SOOOOOO many options because of all the...

What I meant is I don't understand what seems to be a negligible or odd option, I can see having one model dimmable and the other not, INSTEAD of one just 50% adjustable WITH a pot and one 100% dimmable but WITHOUT a pot, seems odd to me, but then I don't pretend to understand this stuff, lol.

Sixstring, I have watched his video series, but it seems to leave out or miss much of this, but I could have missed or misunderstood it as I had almost zero comprehension of LED lighting and have read so much since it makes me dizzy, lol. I'll have to go back and watch them again to see it I...

Thanks Airwalker, so I guess what I don't understand is why with the B type you have to add a pot (is that a resistor you need to add?) and what does "3 in 1" dimming mean? With the type B is it possible to wire it up so that you can dim multiple drivers?

Thanks for that Stephenj and Abiqua, guess I'm still trying to parse out the meaning of some of the specs. For instance under "Type" the data sheet says: Type A - IP65 Io to adjustable through built-in potentiometer Type B - IP67 3 in 1 dimming function (0~10Vdc, 10V PWM signal and...

By the "(a)" version you mean the non-dimmable models? If so I guess I'll have to try that on my next build as I currently have an order for a Mean Well 320H C-1050B.

My point is that these fans can serve two purposes, cooling and circulating air, I guess I didnt phrase that correctly. From what I'd read on some other threads, this has been done, but that may be due to different/smaller cobs, idk.

Whats the data on those Getian 5000k and price set? Heard some good things about them, I mght try a few, Russell

So you think I should run this set up in parallel? I'm planning on building a total of 6 fixtures, hopefull 400w a piece when I'm done. Wonder I could break the 1.2 GpW right away, so as to blow away my old record with halides. Anyway, any sugesstions are totally welcome, don't be afraid to...