Issue description: Was wondering if it is possible to handle external storage with fluids similar to items, where a chest may have multiple different items, possibly a tile has multiple fluids stored. This would be extremely useful in tandem with integrated dynamics/tunnels where you can interface multiple fluid tanks.

What happens: Right now if you have a block that contains multiple fluids, it will only store one in the RS network.

What you expected to happen: Store different types of fluids from one external storage

Steps to reproduce: (with Integrated dynamics)

1. Hook up multiple fluid interfaces to tanks
2. Point an external storage to one of the fluid interfaces on the network

...

Version (make sure you are on the latest version before reporting):

• Minecraft: 1.12.2
• Forge: 14.23.0.2532
• Refined Storage: 1.5.22

Does this issue occur on a server? [yes/no] N/A

If a (crash)log is relevant for this issue, link it here: N/A

Again, I feel this could be a really cool and useful feature if it possible/plausible. I'm not sure how different handling items and liquids is. No sweat if this would be implausible.

Thanks

It would be really, really cool if you'd read previous issues before opening a new one.
#1034

Ah, that's my fault, I tried searching multiple different keywords and looking for an existing issue. Apparently I'm too tired since it was right in front of my face. I apologize.