if you are looking to get the same growth as you have now go with leds at just over half the wattage you have now in your cfl bulb. If you are looking to improve growth go with wattage around the same as you have now and it will be a very noticeable difference. Just make sure you have a grow type spectrum with mostly red , a little blue and a little white (a uv or 2 would not hurt either).
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Nick
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