I think the tank needs sand and while ricks tank is beautiful, I don't like the look without the sand. I never comment on people's use or lack of use on sand. Each person has their own right. I personally think that tank would have a final wow with a nice pure white sandbed.
I run a mixed sand bed. DSB in the back and SSB in the front. Tank is going on 2.5 years and my growth is huge. In 26 months, I have one piece that has grown from a 2 inch frag to probably 200. The coral is 2 feet deep by over 2 feet wide and over a foot tall. (Literally growing out of the water). I have a blue tort that is over a foot tall and a foot wide with ripped with branches in less then 2 years from a 3 inch frag.
Bottom line: Anything can be attainable with or without sand. It's just your preference.
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