Hardy Tropicals UK

countrylover wrote:I have one sagittifolium and violaceum. They are now under my LED lamp ( a little experiment how LED light promotes growth of plants). I'm very pleased with their growth-better than colocasias in my opinion.

countrylover wrote:Hi.
I have this kind of led lamp http://cgi.ebay.de/Profi-LED-Pflanzen-G ... 564102a187
So I put the lamp by the window about 20 cm above the plants. Within 2 weeks each plant produced 3 leaves but the petioles were so long I had to move 2 leaves of each plant from under the lamp. The result is these 4 leaves are smaller than should be due to lack of light. 2 leaves remaining under the lamp are just as they were grown in sunlight- normal size of leaf blades and healthy color.
Anyway, now the plant must thrive in normal daylight cuz I'm growing some Coleaus and Passiflora seedlings under led light.
I'll try to take some pics of my experiment tomorrow

Dave Brown wrote:The info I have says if a Led array is 15w, it is 15w !, and the light output is the same if you have 15 x 1watt leds or 15000 x 1miliwatt leds, obviously 15000 leds will be much more expensive to manufacture Don't look at the number of leds, look at the wattage

Hi Dave
I'm a bit confused by your explantion I understand that if the array is 15w then it is 15w,don't know why anyone would think otherwise,but you seem to be under the impression that I couldn't understand that.My concern was the overall size i.e dimension of the unit.They did say that with current technology 1w leds produced the best light output per cost of the unit.