Thanks.
I will take more pics of the enclosure.
It cost me about 35€ and took me less than 1 hour to do it.
I took some "expensed PVC" (sorry i haven't the exact translate term) and fix on a double thickness of vegetal fiber.
Made some hole with cutter and place plant in it but just plant roots.
And that's all.
It's great for humidity, it give me 15% more in my enclosure.
Here are some pics
Elongated are faubulous tortoises. Great personnality, active, curious, i really love this specie =)
I have them all together in the same conditions.
28°C day and 21°C night
6.0 uvb tube, ceramik spot and a little spot of 50W in the down part at the back right of the enclosure.
I have a reptirain system of Trixie on all the left part with an automatic system 25 seconds of spray every 4 hours on day and off on night.