Some questions

[dan203]

1. Do fish sleep?
2. Do you keep the moon lights on all night?
3. Do there need to be nights where theres total darkness?
4. Why do fish scrape thier sides on rocks.

thanks for any help

[Tim Marvin]

1. Yes
2. I run them 24/7
3. not always, there are times of almost total darkness in the ocean
4. something irritating them such as Ick.

[Reef69]

1. yes, they swim in low places of the tank, such as corners or near little caves in the rocks, some have little burrows and sleep in there

2.no moon lights here..but want some..lol

3. same answer as Tim

4. something irritating

[TAXMAN]

1: Same
2: Moon lights on 1 hour before and off 1 hour after my main lighting. Just the way I do it.
3: Same
4: Same