I thought for a minute I might be wrong, but the online fish info sites back me up on the pH being a little high:
http://www.fishprofiles.com/files/profiles/292.htm
http://animal-world.com/encyclo/fresh/Puffers/KingKongPuffer.php
http://www.**************.com/forum/library/puffers-in-focus/suvattibreeding/
Most site agree that the pH should be in the 6.7 - 7.7 range. Now, that might not be what the problem is, but then again it might be.
http://www.fishprofiles.com/files/profiles/292.htm
http://animal-world.com/encyclo/fresh/Puffers/KingKongPuffer.php
http://www.**************.com/forum/library/puffers-in-focus/suvattibreeding/
Most site agree that the pH should be in the 6.7 - 7.7 range. Now, that might not be what the problem is, but then again it might be.