How can i get my juvenile cichlids to become more active? 6 weeks ago i moved them into a larger tank from a 36 gallon bowfront to a 75 gallon long and they have been hiding ever since. The only main difference in the tanks besides the size is i changed from a gravel substrate to a sand substrate and from artificial caves to stacked stone. They dont even react to the LED lighting and i have tried them on blue, green, yellow, and soft white. Its 8 of them in the tank each approx 2.5 inches long. Any suggestions would be great.