Can't extract Liquid Growth Medium from incubator.

I playing the recomended Direwolf20 pack and i tired extract with any fluid pipe/conduit, but i cant extract, if i want extract the water coming, not the growth medium, if i use the Glass Cylinder and i take the full glass cylinder to the output tank not extract... I tired directly tkae a tank, but not worked, i don't know this is a bug, or this is directly...