Ive found a good method that seems to work quickly.

I take a mens dress sock (shh my wife doesnt know) and fill with the cya you want to add. I take the top off my skimmer and feed the top of the sock thru the hole in the skimmer top. While holding the top of the sock, I put the top back on the skimmer to measure how long I need the sock to be to be in the flow of water, then tie a nice knot.

Takes about a day to go through 1.5lbs of conditioner this way. No need to squeeze or mess with it and easy to check.