well i googled that light looks like its 450 watts should be fine for a small tent, do you have a temperature sensor with a probe to hang near the top of your plants it'll give you an idea of what the canopy temperature is. i would suggest lowering the light closer to the plants so they wont be as spindly the ideal place would be as close to plants as possible without burning the plant. if you dont have a temperature sensor just use the back of your hand if its too hot for the back of your hand is likely too hot for the plants.