Hello all this is my first post although iv been getting advice from here for a while now thanks a lot My problem is I have a 600w air cooled hood that i had used a few times now and on my last grow just in flower it went through 3 new hps bulbs but before this I never had a problem so had to just stick with mh bulb which was absolutely fine hps bulb would last maybe 5 days then check plants an the light ain’t come on take hps out an mh back in fire straight up I have done this before and no problems can’t get my head around it tbh any ideas guys?? Thanks again