Quote Originally Posted by Permabaked
I'm getting rid of my 600w HPS because I'm moving into a studio apartment and don't want super high electricity bills. Normally I can yield about .6-.7g/w. Because of the high cost of LED's I know I'm going to have to seriously downsize in terms of wattage so I want to maximize my yield potentials by manipulating the photoperiods. I'm going to be constructing a few of my own panels and was looking for input as to how I could successfully make a veg chamber and a flowering chamber both using the PAD method. For my veg chamber I'd normally use 20 hours on 4 off and 12/12 for my flowering chamber. I'm planning on building my own LED panels using information I found on greenpinelanes forums and want to build them specific to this style of growing. Knna, dogznova, weezard, anyone want to help me out real quick?
I thought I had responded to this, but it was a post I had made to another.

This was the post I made to Rickkus 23rd August 2010, 08:39 PM at my home site, in regards to vegging LED spectrums.
Quote Originally Posted by salmayo
My preferences:
415 to 445nm Blues
660nm Reds
(Also 735 to 745nm Far Reds after the 10th day of flowering).

If you think the growth is a bit sluggish, I recommend Simple Rauber Enhancement - .5/.5 hour Red cycling (24/7), with 3/21 or more Blue cycling. (BUT -- Let none accures the Prince of Artificial Darkness by saying he's normal!)

Wish I had more time, I miss my TY!

Take care, Sal.
Sorry I got confused on that one.

I think LEDengin Red and Far Red LEDs are good choices for Red and Far Red, but since I go for Blue down in the 415 to 445nm range and such LEDs aren't cost reasonnable, I've been using Actinic Blue T5 HO fluorescent tubes as a Blue source (since I'm willing to trade some output quantity for spectral quality.

According to your specification: "For my veg chamber I'd normally use 20 hours on 4 off and 12/12 for my flowering chamber." -- I'd recommend just the Red and Blue LEDs in the Veg chamber. This combination will also work in you flowering chamber, but I would recommend at least 1/5th the output wattage of your Red LEDs in the form of Far Red LEDs be applied for optimum ripeness in flower. You may wish to hold off on the Far Red until you are satisfied with the tightness of your buds, since it can encourage elongation before this. Far Red also contributes to subcanopy stem elongation in the absence of subcanopy Red sources, so Far Red application is a matter of personal choice.

You can use Simple Rauber Enhancement by cycling your Red LEDs .5/.5 hours on/off to increase growth rate and efficiency in both your Veg and Flower chambers with those 20/4 and 12/12 photoperiod timing.

I look forward to how it turns out for you. I'm sure you'll like the results.

Sorry for the belated answer, I though I had already addressed that one. My bad.

I hope I answerred what you where asking.

Sorry to tussle in your thread earlier, but I tire of flamers (shameless haters) quickly.

Take care, Sal.