where to measure temp in a hydro tent grow!

[ytrew]

i have a tent grow and at the top the temp runs 80 i have another therm at the plant base and it reads 91! i do have a fan blowing over on the plants. The water temp in the hydro buckets run 80. what is the correct reading and what should it be?

 

[sweetnug]

You should measure the temp. between the lights and the plants. The temp should be 75-low 80s without co2 enrichment. Water temp in hydro systems should be low mid 60s. All biological activity stops at 80+. They won't grow well at that temp. Even with a fan blowing on them you need to have exhaust and intake fans as well

 

[ytrew]

i have a tent setup and a squirrel cage exhaust, the tent sucks air through the bottom.