Mazgothanswered grow question 2 years ago i dont think that mars hydro is bad,just here in greece we have 33C and 36C every day,i am lucky that in my house the sun doesn't hit it at all and is cooler,but the tent close with mars hydro inside produce too much heat,like 32,33C,with the tent open its like 29/31 Max during the day,i chang to the mars hydro again today with the tent open,hope i will get some better results