Flexible Ball Socket Joint Tubing return line
 

on the line being returned from the sump, it has the flexible type tubing.
currently it has a round nozzle on the end. i was thinking of changing this to a "y" adapter to allow flow to both sides of the tank. is these achevieable?
how hard is it to change the ends of these? do you need the special tool they sell with it? or would i better off to buy a new assembly to my liking?

http://www.drsfostersmith.com/Produc...&N=2004+113794

i'd like to change part "c" with part "f", then put on 2 part "c"

your thoughts?

These come apart if you pull hard enough. Pull and bend at the same time if necessary.
You can mix them as you like.
Looks like regular Lock Line fittings, they're not very water tight, you'll get some salt creep on them just so you know.

Can you get lock line in Calgary? Where?

From me.

Im not sure about Calgary, But you can get then thru J&L or ocean aquatics.
Forget the tool the 3/4 stuff is simple to work with, The 1/2 inch is a bit tougher but still workable.