# Biomes Workflow

For the Double and Multi preset, you have access to multiple biomes. A biome is the combinaison of the automatic layer, **which defines where the biome is,** and the manually paintable sub-layers.

Just like in the initial setup, you have to assign a **Weight-Blended** LayerInfo for the BIOME and **Correction Layers**, and a **Non Weight-Blended** LayerInfo for the individual Sub-Layers that you want to paint.

The correction layers are layers are are set on top of all the biomes.

{% hint style="danger" %}
Be aware that using multiple biomes is heavy, in terms of shader compilations, complexity, edition time in the Builder, etc. 

Use only what you need !
{% endhint %}

![All 6 Biomes and a Correction layer going on top of them all.](https://3422122786-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FKy5lT5JIdDDFDRaA6D4d%2Fuploads%2FGujZBBGwdjCU7s1zZzZA%2Fimage.png?alt=media\&token=9be08315-3081-4769-aac4-cdae79c5cd82)

Each of these Biomes work as expected, with their own filters, Grass support, etc.

![Grass & Filters on the Sub-Layer 2.](https://3422122786-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FKy5lT5JIdDDFDRaA6D4d%2Fuploads%2F8pPottd6CUsYCJ0pAq0x%2Fimage.png?alt=media\&token=32f4b499-2715-4be4-8f3c-0735d28cf548)