since1991
Well-Known Member
What are your plants telling you compared to what they told you while basking under a single 600 watter?In using 2x cmh to replace 1x 600 am I wrong in thinking this. With two cmh ballasts and more surface area to vent heat into the air>duct>out would that mean the ballasts combined are going to run cooler ambient than a 600 ballast?.