New grow out tank, humidity too low - HELP!

[Roy Anthony]

Hi All!

Long time reader, first time poster. I have 20g tank that I converted to a vertical vivarium. I would consider this my first real tank where I was actually successful in growing moss and plants. Construction and planting officially finished in early April. The issue I've been having is that I can't seem to raise the humidity with my current setup. I'm maxing out at 50% most days. I believe it may be the lack of ventilation within my tank, which would also explain the heat! I figured I'd better get suggestions from some froggers with real experience, and maybe recommendations based on my setup!

Tank Specs:
12.25"W x 12.25"L x 30"H
- Front: Glass pane held in place with magnets

Ventilation:
(2) 1.75" holes on the top glass.

Lighting:
Jungle Hobbies LED Lighting System
- positioned 2.75" from above the tank

Misting:
MistKing system, 3 nozzles - 2 front corner, 1 back corner.
- Schedule: 5 times a day, 20 secs

Drainage:
False bottom
- Syphoning out the water

Plants:
Ficus pumila 'Minima'

Ficus exotica 'Oriental'

Southern Maidenhair Fern

Philodendron 'McColley's Finale'

Tradescantia fluminensis 'Wandering Jew Tricolor'

Peperomia trinervula 'Bibi'

Selaginella kraussiana 'Gold Tips'

Lysimachia sp. - Creeping Jenny

Ficus pumila 'Creeping Fig'

Neoregelia 'Chiquita Linda'


Background:
Ecoweb + Hygrolon + Moss spores

Here are some pictures of everything (start to now):
















I plan on putting a tree frog species in here (most likely P. Tomopterna) once I get the humidity and temp situated. Any recommendation would be great!!

Thanks,
Roy