... :Use high efficient 1w LED as the light source , base on 288*1 high power LEDs with metal cover , built ... 1w LED chip.3.Over 50000 hours .4. Our common light ratio :8:1 , 7:2 , 7:1:1 with the ... & ballast needed.8. Ideal for all phases of plant growth, and works well with any indoor garden, hydroponics or soil ... , so put it in the dry place . 300w LED grow light for growing kinds of plants,flowers