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Beautiful garden, but I'm afraid the tops may grow into the light. Maybe you can try a bit of LST or something if that proves to be the case? Anyway nice work man...

Not sure if you have access to them over there but I've had good luck with Kill-a-Watt: http://www.amazon.com/P3-P4400-Electricity-Usage-Monitor/dp/B00009MDBU/r

Looks rocking in there!

@Growmau5 How is your Open Source LED project coming? Thanks ahead of time for putting it all together.

What kind of dimmer is this? Forgive me...

It does look rather linear actually for all three curves.

Also, does anyone know how/where the droop factors in Supra's Spreadsheets are calculated? I looked at the Cree PCT at: http://pct.cree.com/dt/index.html When you chose CXB3590, there are no values below 1.4 amps. Couldn't find anything in the data sheets from Cree as well. Anyone know...

Hey SaltyNuts what current were you thinking of running at? What driver? How many COBs?

I'd imagine so, but still DE HPS are no joke paired with a good reflector. Also keep in mind this may be strain dependant as well. One thing I wonder about is if we have unintentionally been breading cannabis that responds better to HPS given that it was used so long and yield is a major...

I no longer have the lights sadly, though I loved them. I stopped growing medical as my career kept me too busy to keep up with it so I sold them. Pulling 2 lbs per was pretty easy. Now just a hobby space... plan to grow Mephisto autos when I get my setup running. As for your question, I...

Seems like this could use an update for 3500k...

Nice. What is the star-shaped thing you're working on? Looks very interesting. Also LOL at the mom's basement bit....

Great post Bobby_G

Ah thanks BuddyColas. This helps a lot.

I'm comfy with electronics (did some analog electronics in undergrad but it's been a while). Those builds look great. I think with these new heatsyncs it's getting even cleaner. Love Netherfly's build as well. What are your recs re temp as per my other thread? Trying to sort out PPF of the...

Looks great.

I did notice SupraSPL saying something about dividing by the LER for various color temps, but I'm not sure where one accesses such a number and how that is measured in the first place.

Well I'm asking b/c I couldn't find the answer. I appreciate your input.

Hey all LED DIYers. I noticed that the lumens decrease for the warmer color temps and subsequently it seems people have suggested 3500k as opposed to 3000k as a sort of happy medium which keeps a lot of red but gets more lumens. What I don't understand is whether the PPF actually decreases. Is...

Vegas curious what you're designing. This seems more in line with my interests. Is this for personal use or something you plan to build commercially? Cheers.