I never ever had any problem with mars personally there service was great,I had afew of there lights years just gave two to me dad.He wanting to produce bud for oil,so rather than have the collecting dust I gave em him .He's got cannatonic under em now.I never had no problems with moisture with lights either ,i had a cob of them that i still do autos under for the time been.I never done more than 6 oz 4 oz of real nice quality bud 2 oz of nice buds .But not stuff I would sell on.I put it with the sugar leaf and it goes to oil. I'm using spiderfarms sf1000s now and I'm well impressed ,but that don't mean I'm gonna put mars down ,they always sorted any problems I had service was great tbh