URGENT HELP: Is weed killing my fish?

[Mr Thompson]

Thanks all again. Just taken a look at them now in the night and they seem to be in much better condition. They are not at the top but are not being skittish when I approach them. All of them again have bunched into a particular corner.

I have removed some of the algae. Just hope they survive the morning.

 

[RobAmy]

Good luck with them, sounds like the system can not handle the fish load. If you can add an air pump that may help a bit.

 

[Ronfire]

The water you are adding is it city water?
Does it have chlorine in it?