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Nah, I think because I'm so used to DWC that I literally forgot to switch the pump back on in my new active hydro system. Complacency. No. What I mean is surface area of the water vs oxygen transfer rate into that water. Like can O2 dissolve quickly into a hanging wet root mass, say for a...

I am so over DWC--10 years of changing 30kg + reservoirs is a pain, and those systems have less-than-optimal O2 levels. SO I have whipped up a "media-less flood and drain system". Now the pump wasn't turned back on that's why my crop half died. So HERE hydration is more important than...

For automation, I do have an Arduino with wifi and a liquid level sensor (etape), where my computer terminal prints a string of res level data in liters, which basically tells me if it's draining, and then filling back again, etc. That way I know the pump is actually pumping the grow tubes, and...

Okay yeah those 90 cri ones. Samsung strips doesn't have those, not sure why. Otherwise the PAR photon output is higher with the 4000K, so I really see no benefit to using 3000K or 3500K samsungs

I'm kinda sold on the 4000K having all of the good peaks from the 3000K and 5000K, best of both worlds. Also growing sativa (black widow and banana) so nervous about stretch.

Active hydroponics requires a pump to supply plants with hydration, duh. But I have killed so many crops that I have pretty good reasons why it happens. Sometimes the fault lies in the machine, but usually fault lies in man. So maybe others too can learn from my fuckups. · Never go a day...

I have the option of less efficient 3000K led or more efficient 4000K Samsung leds. So I superimposed two relative colour spectra. But I see no significant departure between those 3000K and 4000K spectra in terms of 680nm+ relative output. Sad Emmerson. 3000K = RED and 4000K = BLUE 3000K...

Thanx, but that still doesn't work

I can't get any data file I made to open, what am I missing? Using WebPlotDigitizer and exporting the data file via .csv and .xlsx file names, but the calculator always error dings the file selection, not the example file, yet my format is the same.

Thanx I will check him out.

Yeah old-school lore says "More blue for veg and more red for flower" but for cloning using a lower K may produce better results...

You rate the mix is more optimal somehow?

Looking at Samsung strips with LM561C for a veg + cuttings box. I figure that colour quality seems to be less important than quantity, generally, but not when it comes to morphology, such as making new roots. I find clones can develop roots faster (1 week instead of 2) than HPS compared to 4K...

My 2c on UV via HPS...I have a lil solar toy: UV light makes a lil motor spin a particular speed under full African sun. Then, I tested it under a crappy 400W magnetic HPS that shouldn't have even been used to light hookers at a truck-stop-- here the motor span about between a quarter and half...

@Yodaweed , you have committed several logical fallacies, the rest of us would like to get down to the truth of things. Debate without anecdotes, assumptions, and esp character attacking please :). CobKits shot your argument down using comparative math--he has financial bias, but his clientele...

Great thread guys. Skepticism is the sword of truth ;) And I'm just gonna leave this here...

I think it took a few days after initial planting (the radicles were already sprouting after their soak) but it took a about 3 days for most of them to penetrate the plug, next time i'll record exactly

The rapid germination of 20 seedlings using DWC: A case study Intro Seed propagation often involves many phenotypes, so 1 of my germination system (previous DIY) was used to billet this stage of growth, to test out that system. Materials: Seeds (16 Banana hybrids; 5 DarkStar; 1 Sour D x...

Accurately constructing a small DWC system for the rapid germination of 20 seedlings Introduction: This project designs and constructs a small system that can germinate 20 seedlings. A bubbler system i.e. Deep Water Culture (DWC), is a simple way to hydroponically cultivate plants. Advantages...

DYK @Johnny-mariseed, that "OrganicTM" is unfortunately just a marketing tool, a mere marketing cliche used by industry to bait good people. Organics draws more from emotion than reason--logical fallacies everywhere. People have strong emotions and opinions towards organics, which really only is...