Two of the Inda-Gro Pro-420PAR series on a 6 ft rail with highly dense planting.
This was a new medium for me and the initial cost was a hurdle. But I've seen improvements with the phospors devoted to PAR spectrums and the EFDL induction lamps fuse the glass together which means the gas has nowhere to escape. The blackened ends you normally see on a fluorescent lamp never occurs. An EFDL lamp burns @ 90% lumen output for over 10 years. So consistent wavelengths and intensities grow after grow with UVB at flower for increased trichome production is why I originally went to these but they also run cooler at less wattage then the HID's.
All plant species are using matching pot shapes and sizes, identical planting mixtures, aquaponic watering, nutrients and lighting periods. The nutrients are prepared in Aquaculture, with the aid of fish waste the nutrient rich water is used to feed and hydrate. The only variation between the two systems was that I increased plant density with Inda-Gro and gave them 6 ft rails instead of the shorter 4 ft rails on the HPS systems.
Species: BC PURPLE
HPS Wet Wt = 300 grams
Inda-Gro Wet Wt = 338 grams
A chemist was employed to produce oils, or 'ear wax'.
1000 watt HPS averages 28 grams per 1/4lb of lower buds.
Inda-Gro 420 watt averages 38 grams per 1/4lb of lower buds.
The BC PURP/420 Inda-Gro yielded a higher total average of 38 grams of additional wet weight per plant and an average of 10 more grams of oil weight per 1/4lb then the BC PURP/1000 w HPS under identical conditions.
The oil production results confirm the observations that the plants seem to have increased trichome production. Plants under the Inda-Gro show greater vitality, fewer yellowing leaves (which I leave on to absorb energy), less internodal spacing and finish in less time with denser buds. These early results, even when packed insanely tighter per sq ft in larger spaces suggests a conservative final yields increase of 10% per plant on largely Indica hybrids with 20-30% increases in largely Sativa hybrids.
These images show an assortment of strains which have equaled or surpassed HID combinations in terms of quality, time to harvest and yield like the BC Purp, Jack Herer 6, Barneys LSD, White Russian, Waikiki Queen and even some enormous Chile Peppers that I keep in a tent grow. More to come
Edited by calbunn, 29 December 2011 - 03:54 PM.