Feeding Flax

So I want to start feeding my guys Flax....but I read that you shouldn't water it down. But my one guy I ALWAYS water his grain down and that is his favorite way to eat it. Will I have to stop putting water in his grain if I feed him ground flax?

Might be a dumb question but the Cyanide that is activated when watered is whats freaking me out.

Also can you feed it whole? I have read you can.....

I’ve been feeding it whole to my buckskin since I bought him last November and he shines like liquid gold.
There have been some really good threads in the 6 months or so about feeding it and all the different ways to feed it.
http://www.horseforum.com/horse-nutrition/flax-seed-question-119144/
http://www.horseforum.com/horse-nutrition/feeding-whole-flaxseed-114719/