Again.. Serra is right on it..
Whenever I use the X-310.. I always run it between 10 and 17% continuos.
Over 20% and that thing is blasting.
I also agree with EBAC... don't use FLG. Actually FLG is a fluid from Antari that we don't import.
Elation makes X series Fluid.
All I can say is that this is the fluid I use, and wouldn't recomend a fluid I've never used on the X-310II. Maybe EBAC and Serra have used different fluids on the X-310 but, I wouldn't go with anything that hasn't been used before.
On another note.. we've been discussing Haze, but the X-310 is actually a fogger. Make sure you don't use Haze fluid in this machine as it will cause damage.. Stick with Fog fluids.