Xychorium Water is a block that acts like a water source block when connected to a multitank via a Valve. Just like a normal water source block, the valve will draw 1000 mB (one bucket) of water per second from the Xychorium Water block. Unlike a water source block, however, Xychorium Water does not flow, and therefor keeps the tank fed while only taking up one block.
Xychorium Water will NOT hydrate soil, nor will it interact with an aqueous accumulator or a similar machine, nor can you fill a bucket or similar container from it. Its only purpose, currently, seems to be as a replacement for source water in feeding a Xycraft multitank.