Originally Posted by
gardro
Good youtube videos you've posted here Hotshot.
Im afraid your conclusion isnt entirely accurate. Each electrical watt of these lights is 70% more par effective than an electrical watt of hps.
Yes a 400w hps may make same par, but uses far more electricity to get it.
2 of these will put the hps in its place
Always wise to bear in mind migro may have bias but i like their videos and factual, open approach.
However i do agree, if you dont have funds to invest in lights, hps is a good start. You will pay much more though, over the life cycle of your light when considering running costs.
600w hps efficiency is best. 400 is worse and then a dimmed to 250 will be even worse.
All food for thought.
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