Can confirm this behavior on a Realm playing on Switch, 19x19 farm, glow squid not spawning in player-placed water sources.
Y-19: Stone/Cobblestone Y-18: Air Y-17: Water Sources, Water Streams Y-16: Water Sources, Water Streams Y-15: Water Sources Y-14: Water Sources Y-13: Water Sources Y-12: Water Sources Y-11: Stone/Cobblestone
Plains/Savannah biome border directly above the farm.
Ol_Song_Rant
Can confirm this behavior on a Realm playing on Switch, 19x19 farm, glow squid not spawning in player-placed water sources.
Y-19: Stone/Cobblestone
Y-18: Air
Y-17: Water Sources, Water Streams
Y-16: Water Sources, Water Streams
Y-15: Water Sources
Y-14: Water Sources
Y-13: Water Sources
Y-12: Water Sources
Y-11: Stone/Cobblestone
Plains/Savannah biome border directly above the farm.