no one can answer this really?

 

Do you have frogs in the tank already? Try experimenting with different sizes of a vent to get the results you're looking for. I'd do the screen at the top of the viewing area - heat rises. But it would also depend on if you have a hood that would just trap the heat in despite the vent. You could also try some fans blowing across the top of the tank to help dissipate some heat from the lights. A small fan inside the tank pointed at the front glass could help keep your viewing area free of condensation.

 

If you only have a single vent, I would put it at the top, front.
The top because heat rises. Let it out.
The front to help keep the glass clear.
If you can add another vent, put it at the front, at ground level, like in a Euro style, front opening viv.

Yes, you are too hot.
1) raise your lights an inch or two
2) rig a small fan that simply blows over the top of your lights
Those 2 things alone can be a 5 minute fix to help with high temps.
3) Get those vents in right away. Adding the vents allows water to evaporate. Your frogs like that word, "evaporate". It's the root word in evaporative cooling. That's all your frogs care about. They couldn't care less about the condensation on the glass, but they will be loving life with that new evaporative cooler you have installed.
Screen vents equal evaporative cooling. Once you add a proper, large enough screen vent (not a couple little holes), your frogs will be able to thermo-regulate their own temperature...to a certain extent. Yes, they can still get too hot, in the same way that an evaporative cooler may not keep up with the summer's hottest days, but they will be able to handle heat quite a bit better than non-vented tanks. I have had my vented tanks up over 85 degrees with no losses.

Finally, a half inch strip is better than nothing. A one inch strip is better yet. I put at least two inches of ventilation, all the way across the tops, in every tank I build. Remember, if your humidity is still too high after putting a vent in, it is a major task to try to add more. However if you put a 2" strip in and it is too much ventilation, it's really easy to set something over half of your vent, closing it off. It's really easy to add another misting cycle or two to bump humidity.

 

If you only have a single vent, I would put it at the top, front.
The top because heat rises. Let it out.
The front to help keep the glass clear.

Pumilo, let me ask you this if you don't mind:
How about 1 fan at the top of the back wall blowing air at the doors to keep the glass clear? Or would you still suggest the fan in the hood blowing down?
Thank you!

Daphne

 

Ok so I lifted my front glass up to leave a 3/4" strip hole near the bottom of the tank and my results for the morning where everything was high peek on temp and humidity ... I got a reading of about 79f-82f and humidity is at 72% with a 15 sec misting one per day in the morning right when lights goes on... I do have a 120km cpu fan in the vivarium to keep the air moving and it goes on every 30min for 15mins and off when lights are not on...

This is when the vent is near the bottom about 1" above the leaf litter and a 3/4 in vent but will end up using a 1/2" vent only as it's a long strip 35" long...


Is my humidity to low? What caused humidity? And how to raise up the humidity level ( more misting?)?


Ps there is no frogs yet and it's a 40gallon breeder tank on its side horizontally with the opening at the front