Thanks hisk, i will give it a try then, as you said with a false bottom this can work i guess
So for the moment (as the terrarium is higher than the other i put the ceramic inside)
So i'll leave one grid for now, and the other one has already become plexiglass with a stainless steel frame(so neither the lamp or the plexyglass fall inside) for the ceramic heater.
I'll let you guys check, this is going to take time ahahah, he's still a baby anyway.
Thats an exoterra 45cmx45cmx45cm (was going for the 30cms high but this one was half the price)