SPS issues... again.

[Reefer Rob]

Originally Posted by MKLKT

T5 to LED could potentially have been a huge jump in lighting intensity. I assume your frag tank has had consistent lighting? That's a pretty obvious tell that it isn't a chemistry issue if the system is connected.

+2
That just leaves your lights, predators, stray voltage or SPS voodoo. You haven't said how they die.