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ACE Farmer 500 Watt. Great light, incredible price, Free Delivery Stateside. Bought one over a month ago after seeing it posted here. Ordered a second last week because, let's face it: This is the end of cheap grow lights! Say goodby, no one is ever going to get a better light for this price...

Yep!

Wow! Great feedback and results from your wollastonite grow :bigjoint: Yes, the Silicon from the wollastonite is leaching from the growing medium so I would top dress at 2 months, and here's why I think that ... Dissolution of Silicon from Soilless Substrates and Additives (Opens a PDF research...

Sorry, didn't directly answer the question. Mixed in once when blending the soil. Good luck! Saw some on eBay: Wollastonite-calcium Silicate -vansil W -20 __2 Lb Maybe let us know how it goes, too?

It is added to the soil and then releases over days time.

You want to convert solar panel DC current to AC using a micro-inverter. Youtube series on a unit which claims it can plug into your household US 120volt. Plugging Solar Panels Directly Into An Outlet | Surprising Results

This is the study using EVOs to which Samsung refers. But it's lettuce :|:| Effects of White LED Lighting with Specific Shorter Blue and/or Green Wavelength on the Growth and Quality of Two Lettuce Cultivars in a Vertical Farming System From conclusion, "At the same electrical power, the new...

I am very interested in learning more! Are both the 3000k and 5000k Samsung LM301H EVO diodes? What type of diodes do you use for 660nm and 720nm? Can you list the diode mix, i.e. quantity of each diode on the board?

Wow! Thanks for sharing all this knowledge Prawn Connery!

To clarify, here I meant the series replaced by parallel strings, like this:

On this light the EE said that the power to the series would be uneven. And that the diode intensity in Series 2 might be different from that on Series 7. And this was because all the series draw off of that one green-tinted positive pad. Could this be a thing? I don't know much about...

I'm going to ask, thanks!

I have a discussion going with an EE about the PCB design of this light. He says the design is inherently poor because it is using unregulated series of diodes. He claims that, because each series is unregulated, the diodes will be difference light intensity. He introduced the idea of 25% loss...

Is it a mix of both? I think I've noted 13 series circuits here, all feeding from the one big positive pad (see green overlay). If this is the case, how does the power get equally distributed to each of the 13 series circuits? Please be kind :) I have a limited idea of electronics. I believe...

https://planthardiness.ars.usda.gov/ Here's a closeup of Massachusetts.

These are incredible! I'm blown away these are here in Massachusetts, especially with the wet summer. You wrote "1:3 peroxide spray every couple of days" for problems. I was wondering if you used anything else?

40% off. Buy two? 30% off this one.

I also came across this technical note (https://www.upowertek.com/what-is-pwm-dimming/) about Fake PWM Dimming, which I think is what I'm getting confused about. Would this still be constant current?

How does dimming work on an LED panel? Does the power supply voltage drop like analog incandescents? Or does the supply get chopped up like I've read with PWM? I'm interested in constant current output but PWM adjusted duty cycle coming out of a power driver. Is this even such a thing and who...

What are you talking about? Where did this come from? :confused: Very funny.