I think it would work best for bladderwort plants (Utricularia). My only concern is that there isn't the biochemistry interaction in a relatively closed ecosystem that would exist in nature. I'm not sure how well it would do with waste products.

Here is something similar that I have going, with U. gibba, an aquatic bladderwort and Aldrovanda vesiculosa:

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Most carnivorous plants don't do good in a tank of any kind.

Thanks, I'll figure something else out then

Hegory I disagree. I have grown CP's in enclosed terrariums for over 10 years and still do to this day. I have had awesome success with it as well. It's all about cleanliness and needs of the plants. I have also grown Aldrovanda in a similar way to this.

I can see this terrarium working with some trial and error.

*Make sure the silicone sealant is made for aquariums so there is no or not much leaching of chemicals.
*The rocks and gravel in the bottom need to go. Use pure silica sand in the soil mix and in place of the gravel. Make sure the sand is well washed. The reason why is because rocks and gravel can carry salts which is a killer for CP's.
*Peatmoss will always make your water that color so do not try to filter it.
*Put a bubbler in the tank with a pump which you have.
*Buy a electronic PH test kit that was made for hydroponics. Keeping a low PH will give you an idea on how healthy the tank is. If the PH swings in a short amount of time. It's unhealthy.
*Buying small daphnia would be good to feed the plants. Just don't over load.
*Keep an eye on the temp of the water. Any thing above 80 can be dangerous since infused oxygen becomes low.
*Try to buy plants that grow in similar conditions.

Plants.
Some Sarracenia can be submerged like this and actually grow in the wild in the same conditions. I would suggest sticking to north american species. Same thing with some Drosera. Try to keep the water level no more then 2 inches above the soil line at the max.

You can prevent plant sickness by putting a bubbler or 2 in the bottom of the soil. Bad bacteria and pathogens do not like oxygen in the water. The More oxygen the healthier the soil. This is why water is constantly moving on top and through bogs. This is also a basic principle of hydroponics.

To adjust the PH down, boil water and steep peat moss in it. The tenacity will help the plants.
To adjust the PH up I do not know what to use for I have never had the issue.

Good luck
-Jeremy-

True there are some plants that will do well in a tank (I don't know where else one would grow Aldrovanda!) If or when you get a North American pitcher plant be sure to get a low growing type if you plan on having it in there for long.

Hello, are those fan-shaped leafed plants utricularia? I was in michigan looking for the supposed location of a bog and I did see it, across a deep river, but I didnt want to swim across XD. However, I saw some water plants next to my feet before the river that looked just like that...

The fan shaped plants are aldrovanda, or waterwheel plant, there kinda like underwater venus flytraps.

Wow I didn't even know I was seeing a carnivorous plant I assumed it was one of those invasive chinese water plants. That's cool.