Is squid spawning disabled on Skyblock? I built a squid spawning area (12x12, y=56 to 63), all other mob spawning is prevented by light level, and no squid. Usually when I play I'm the only one on the server, so it can't be that the server spawn limit is reached. If spawning is not disabled, how does it work?

I believe it is. I have a squid farm too and it doesnt work <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/1f610.svg?0" type="image/svg+xml" standby=":|">:|</object>

yes, i was the first to test this and reported it to Kosa. Squid spawning does not work. The water sources count towards your island level though, so i never removed mine.

I'll look into it again.