That is included in Creative Tools Pack, the Cardboard Box Blocks crafting station.
If you want more I can also recommend the admin tool WorldEdit, it's chat command based, but the most powerful block editing tool we currently have for Eco.
Afaik, the most simple way at the moment to do that, open /Eco Server/Config/WorldGenerator.eco and search at the beginning of the file for
The 100 behind Height is the overall world height, the 40 is the sea level, measured in blocks.
E.g.: I prefer to have less high mountains but deeper ocean and ability to dig deeper, so I changed WaterLevel value to 55, now the max mountain height is 45 instead of 60 blocks and ocean/dig deep is 55.
Changes only affect new generated worlds.
First of all thanks allot for all the helpfull info.
To respond on the Creative Tools Pack, the thing is i need some thing like that, but it has to have a cost so it would stil be survival then i would love it.
And about the WorldGenrator.eco file, i dit try some settings but because i dit not want deep sea i dint try to set the water level higher.
Seems like the only way to get the base ground level up tho, hope some day they can make it be a setting on its own.
Aneways thanks again!