I started with Common Plecos which KEPT DYING! They kept dying for no reason, nothing hurt them, nothing attacked them. They were sucking on the algae, what the heck happened?
They must have a mice diet.
(According to some guy with a predatory common pleco)
Kidding don't follow this ^^
On what tank do you keep it? I mean what species are you keeping common plecs? For you to have 6 plecs died off with no apparent reason, I think there's a real big hole that you can't see in your water/diet/ understanding regarding plecs...
I don't want to sound mean or anything but how about chlorine? or huge water chem spikes? Having plecos in a under filtered tank would mean suicide, though you may see them in murky waters from time to time, spikes on a tank is in a whole different level than in the wild.
flaunt that!! FRILLLZZZ!!! Rawr*