also i will like to add few more pointers here to get some matter straght here

1) all mh bulbs genrally best replace when get to 70 to 80 % of useable life but dont wait until end of life because more you leave on longer it more it risk to get arc tube inturpped ( expoled)

2)as far the metal hailde bulbs if useing wrong bulbs it can affect the performace some are base up some are horzontal type and some are universal type so please take a extra sec or so to read the suffex lettering what burning postion and safty requriement

3) i know most 250 watts mh are required to be inclosed unless they come with arc tube shroud they can run open most of them are enclose anyway expect 400 watts it is varis alot i cant say all the answer there

trumpy i do understand that fact most industral place dont really follow the light bulbs manfactures warning at all for 24/7 operation they should turn off the light at least once a week to make sure propley cycled

merci marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)