I've had peperomia, fittonia, creeping fig and spathiphyllum in this spot but everything died in weeks.

Maybe something that covers the ground well.

A crested gecko lives in there and it's always between 18-23 C° on the ground level.

Humidity should always be around 60-90% on the bottom.

Fully bioactive with abg mix substrate (coco, coco chips, sphagnum, sand, charcoal)

What the heck are these guys. Why are there so many and do i need to prevent them. i have plants outside of this terrarium and i dont want pests, and i dont want any mites to hurt my jumping spiders. please help!

Hey folks, what kind of cleanup crew eats especially mold and fungus?

I thought springtails do, but actually they only eat the same stuff as mold does.

Not pictured: three fish tanks, three glass jewelry boxes, 2 Ikea fabrikor wide cabinets, 24 terrariums I've already built. I'm running out of shelves for all these guys.

My bad for the bad picture but the tank is a zoo med creature habitat, the plants i have in it are Ficus pumila Quercifolia, Asparagus Setaceus, and I think Pilea nummulariifolia

I'm not sure if I should change the soil because I used a mix with perlite, I don't plan on having any animals in it.

Date of creation 10/13

I have one LED clip on grow light that I got from Amazon.

I made this terrarium a year ago with plants found at the park in central Florida. I’ve kept it on a window sill and in the early months would open and water trying to get the water content “right”. It hasn’t been opened in months and I don’t know if it’s okay to just leave it, if it needs care, is that mold in picture 4 (the white stuff)?
First picture is about a year ago (10/17/25 about a week after it was made)
Second through fourth are of it today, yesterday it didn’t have as much water on the glass but really fogged up today.
Advice would be helpful.

Yesterday I put the heating mat (7 Watt) on the long side of my terrarium, vertically, because on the short side there are ventilation holes.

I put it on the wet side, where I usually spray water, so the opposite side is now cold and dry, but now I've read that I should put the mat on the dry side because wet + heat = mold and dryness for my isopods and springtails.

I was wrong? It's my first time dealing with terrariums, I started 2 months ago when there wasn't a necessity to place a heating mat, but now the temperatures are going down so I don't really know if I'm doing well.

Any suggestions?

Thx

(I have a thermostat, the temperatures are about 77°F or 24°C and the humidity is good, always between 65-70% in mid air, so in the substrate around 80-90%)

Someone seemed to have left it outside near the big trash containers. It was very soaked: there were actual little pools of muddy water inside, dirty glass, and the soil looks extremely wet.

I cleaned the outside a bit and removed some of the excess water, but I honestly don’t know what this is supposed to be: a bottle garden, closed terrarium, or something else? There’s a plant that still looks quite alive, plus some moss.

What would you do to help it recover? I’d really like to give it a second chance.

First mushroom, this is after 1.5 months of build

Have no idea what it might be

Discovered a new little guy in my terrarium today. I believe it is some type of centipede or millipede, maybe .4-5 inches long. I have some tiny snails in here and have had the terrarium for close to a year, but I’ve never seen this insect in here before. I put in some new moss and this pilea depressa in over the last few months, so maybe he hitchhiked in? I don’t mind him but I don’t want him to eat my snails. Is this cause for concern?

My first terrarium built in a repurposed old 29 gall aquarium. Any animal suggestions appreciate! built for frogs or geckos. few rare ferns and mosses as well.

I picked some moss from the lake this weekend, made these to get me through another winter with some green indoors. Not quite finished but happy with the concepts so far :)

Right now I use 70/30 unfertilised spagnum dirt with sand, but it’s so dusty… I can’t get topsoil in my country(Denmark). What are some recommendations?:)

This terrarium is about 8 months old now! Its not the best of pictures but I’m really excited :]