Is it ok to put the lens on one of these without heat ventilation?

or would it better to just leave it without the lens?

I guess my real question is;

would the heat building up within the HPS because of the lens, be too much heat for the bulb?
Revanche21 Reviewed by Revanche21 on . 600w HPS with no heat venting Is it ok to put the lens on one of these without heat ventilation? or would it better to just leave it without the lens? I guess my real question is; would the heat building up within the HPS because of the lens, be too much heat for the bulb? Rating: 5