4x Mixed strain photoperiod 600watt air cooled hood grow

I know it's a bit late, but cover ur thermometer so the infra red from the light can't warm it up, infra red increases radiant heat, you wanna know the ambient temperature. As a noob I was worried when my temp was high but in actual fact it was the infra red warming up the thermometer.

a paper cup with a hole poked through the base makes a great shade for a thermometer probe, I use a toilet roll tube haha, I'm sure I seen one hanging in @Star Dog garden once upon a time too

It's a small detail but it plays a important part for the reasons @Blue brother points out.

I still use a piece of cardboard tube with a small hole for the cable and a slot in it.

Cheers family, I'll do that wen lights go on later I do get high temps and I bet its due to that fact now u bring it to light! Thanks mate. And loving your room