LED lights and hydroponics

Hi,

I was looking for some advice and possible book recommendations that deals with a small 4 pot hydroponic system and LED light usage.

The lights will be Helios Quantum pro 4-300w (75w per light)
.
Will this effect transpiration levels or the nutrient requirements differently to HP/sodium lights?

What type of hydroponic system (NFT, Drip, ebb and flow,) is preferred for LED lights; and will there be any difference in hydroponic management, than when growing with metal halides and sodium lights?

if there is a difference when using LED lights, how will the nutrient requirements change to satisfy the plants requirements, if using autoflowering or seeds using method ( vegetative & flowering photoperiods)?

Are there any books which now specialise in this difference?

Thanks for any advice and recommendations.

Cheers,

stuckinsamsara

from my limited experience... and i don't use hydro
LED lights run cooler so temperature issues are less likely
buy some calmag something about LED lights and distilled/RO water can lead to calcium and magnesium deficiencies (that might just be a soil thing)
i'm sure there are posts around here about all that you ask
try here https://www.rollitup.org/led-other-lighting/
https://www.rollitup.org/hydroponics-aeroponics/

hope that helps

i use a almost all soiless mix handfed kinda hempy style
and i run cfl's roughly 400w and 2 135 w led ufo's when im just using the led's my waterings a less than half of what i normally use
and then i grow only auto's so its almost nothing weekly a few cups a plant
just my experience with it any way hope it helps

and there are a bunch of good reads out there
only problem is you have to read a few of them and take out what applies to you
i have found none that cover everything usually they just focus on the main parts and just a few details
just my 2 cents bud

Hi,
Thanks for your responses. I watched a link that shows the world record for highest ever yield using an autoflower and LED light. I noticed that they used an oxypot in the clip, thus I guess hydroponics remains the same. (I hope)...

Here is the link: http://www.prweb.com/releases/2012/6/prweb9580672.htm

or if you don't trust the link, text in search engine: '[h=1]'LED Grow Lights Deliver Record-Breaking Medical Marijuana Yields'[/h]
After some thought, the hydro would mean that the nutrient uptake is taken as needed, with the water plus nutirents always being available. The change in photoperiods would desire a change in nutrients, and if an autoflower it would be interesting to know exactly when to change nutrients?...

cheers Guys,

stuckinsamsara