It’s the best wing reflector on the market , it is glace coated and reflex almost 100% of the light. You can add the Super-Spreader just under the bulb to save another few degrees if needed.
I personally don’t like to start seedlings under an HID, they tend to stretch like magic beans to reach the light that you can’t get closer or they will start to burn...
I suggest to start under T5’s for the firsts few weeks of seedling stage.
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