Knots in fluoro.....
Knots in fluoro. whether tying to fluoro or mono, can be a problem with fluoro because of friction. Just remember these two tricks -
1. wet the knots well before tightening;
2. Pull tight with a "jerk".
For fluoro tippets, the blood knot can be used, but most of the fishers around here (me included) use a three or four turn surgeon's knot for that portion of the leader. Yeah, we use blood knots for the rest of it.
For your consideration....