Liquid Monitor does not see a fancy fluid storage tank liquid levels. is this something you can fix or FFS side of things?

https://github.com/Lordmau5/FFS

Most likely FFS because I'm using standard forge fluid system

What do you mean with "does not see"? I made a test in my test world and got this:

That seems to be pretty much what you want. Or is it something else?

Edit: I play in the DW20 1.10.2 modpack with FFS added (default config).

I'll have to check again. I had an FFS Tank of syngas and it wasn't able to find the value of the full tank.

Thank you for taking the time to create this issue, as we're no longer supporting versions below 1.12, I'm going to go ahead and close it but if this bug seems to continue over to newer versions, please do report it again so we can investigate the issue further.