got home last night to find in my main tank what looked like 2 dead 12" plus L25's! sh!t me pants and ripped the hood off the tank. that scared them and they moved a bit. they were both really light in colour and on closer inspection i noticed that the filter was clogged and the fish werent getting any oxygen. sorted it all out and went to bed. barely got a wink lol! this morning they seem alot better but still a bit pale in colour. hope im out of the woods! any advice?