Thermometers HELP!

Getting some interesting readings from my thermometers after having installed my second 6" 440 CFM fan into my grow room. Dimensions of the room are 4x8x6 with two 600w cool tubes and two 440 CFM inline fans with an additional booster fan further down the line. I have a total of three thermometers in the room, and two of them are black and are reading temperatures ranging 91-97 degrees. The third thermometer is white and has a temperature probe that sticks up and reads 79... Obviously, black absorbs light and white reflects it, so I'm having a real hard time determining if the temperature in the room is in a nominal range or not. With a combined 1080 CFM the air is being refreshed 5.5x a minute. There are also two filtered 6" intakes.

I have a hard time believing the temps are into the 90's but I am unsure and aside from buying some oscillating fans have exhausted all my options to cool it as an AC wouldn't work in this location. An oscillating fan would simply do a better job at creating a uniform temperature across the room.

What do you guys think? There is obviously a very considerable differential between the black and white thermometers. Can I trust the white one or would that not be an accurate representation of the temperature?

I had the same problem. I could never get thermometers to read accurately in that much direct light.

So I started using a laser thermometer instead. I check the temp of the top leaves while shading them with my other hand.

The digital ones seem to read 10* hotter in my room than the mercury ones,By feel the old school type are more accurate.

I'd say bang one canopy level and one lower say in the shade but really just use it as a guide 30 degrees c and over will feel very warm to you but if it's ranging 25-28 you won't feel to warm in there

Yeah I may buy a couple mercury thermometers, laser thermometers are out of my budget atm (which I have exceeded two fold LOL!). But good news, it seems the screened in basement window the exhaust was going to was COATED in gunk (sawdust, lint, dog fur, etc) from the unfiltered fan I had running for a while. I took the screen off completely to clean it and it felt like the airflow DOUBLED. Lights haven't been on for more than 30 mins but temp is at 80 now and I think with the addition of a couple oscillating fans I purchased and a cool mist humidifier in the main room, my temps will be uniform and in a nominal range while having a good RH level to boot.

happy post!