Hello,
I have this unusual problem with my tropical tiger barbs & golden barbs not liking the aquarium light on. They all huddle together underneath the plants to hide from the light!!!
I have a 2ft 100 litre aquarium with a 15 watt fluorescent lamp on top, ph is 7.2.
I have tried different strength brightness tubes (10000k & 6500k) but still no joy. I only have the light on for a couple of hours a day to help keep the plants alive but would like to keep it on longer if I could.
Has anyone else had this type of problem? any help would be much appreciated.
Regards, Keith.