First of all thanks for your nice and useful mod.

I was trying to drain or put liquids from the tank using a Dispenser and a Turtle (from CC:Tweaked).

I've supposed that this cannot be done.

A way for adding some automation will be great.

I'm not sure if that I asking so much but get it in consideration.

Thanks,

This is a great suggestion.
I will look into it once I have the time.