Hey MrC...how's the grow going? You should look at starting a grow journal here. It's a great way to describe the trials and tribulations of your first grow.
As far as the temp unit goes, the rule of thumb is to keep the probe, or unit, at the canopy. Shading the unit, imho, does not matter since the plants are not shaded. It's measuring the actual temp. I would keep it how you have it.
As far as the temp unit goes, the rule of thumb is to keep the probe, or unit, at the canopy. Shading the unit, imho, does not matter since the plants are not shaded. It's measuring the actual temp. I would keep it how you have it.