I agree it could be the Hamilton water. I seem to be successful in keeping fish alive and my plants grow like crazy!
I bought an Apistogramma agazzi double red a few weeks ago and he is doing really well, grown a bit already. Sure is feisty and holds his own against the T Bars.
I would like to get some more Apisto's but need to find another bigger tank first.
Danval I hope you have another successful spawning