General:
-Interesting custom hitsounds, but I don't think the "beep" hitsounds fit. Actually, I'm not sure about the custom hitnormals either. It might just be me though.
Protium:
01:33:315 (2) - Too far from (1)
01:35:729 (1) - Move down one level 3 grid (if you do this fix the spacing afterward)
01:40:556 (3) - Too far from (2)
01:44:349 (2) - Too far from (1)
01:46:418 (5) - Too far from (4)
01:47:108 (6) - New combo (either on this or on (5))
03:11:246 (5) - Too far from (4)
Deuterium:
02:13:315 (5) - Remove the custom whistle from the body of this slider
Tritium:
01:02:625 (1,2,3) - Uneven
01:05:384 (1,2,3) - ^
01:17:798 (1,2,3,4,1) - It would be nice if these were evenly spaced, but I guess it's fine as is
02:50:211 (1) - Move up one level 3 grid? (If you do this, fix the spacing afterwards.)
02:54:349 (6) - End it 1/4 earlier?
U235:
-AR - 1? I don't think AR 9 fits here.
01:45:729 (7) - Too far from (6)
01:54:867 (4) - Move 1 level 3 grid up
02:07:798 (8) - Remove the whistle from the body of this slider
02:15:729 (6) - End it 1/4 earlier?
03:00:039 (5,6,7) - Uneven
03:07:970 (5) - Make it equidistant between (4) and (6)
Nice map. *stars*