I have used socks, rollermat, and currently nothing, save for a sock about 6-24 hours after a water change or other maintenance.
My favorite was a roller mat, I used it for about two years, I just got tired of spending money on rolls and changing them out every 4-5 weeks. Socks do the same thing but obviously require a lot more work, which I hate, hence why I only use them for a few hours a week.
In terms of coral health and what not truthfully I don't notice much difference. I did have to feed more with the roller mat it felt like, though.
My favorite was a roller mat, I used it for about two years, I just got tired of spending money on rolls and changing them out every 4-5 weeks. Socks do the same thing but obviously require a lot more work, which I hate, hence why I only use them for a few hours a week.
In terms of coral health and what not truthfully I don't notice much difference. I did have to feed more with the roller mat it felt like, though.