Personally, I will never have a tank without sand. That being said, I would love the ease of maintenance that would come along with a bare bottom tank.
sand looks better, imo. My wife wanted sand, so i used sand. Honestly wish i would have ignored the wife.
I had a bb tank on my last one. Wanted to add some jawfish and a pistol shrimp/goby combo so I went back to sand on the new tank. I hate it. The sand never stays white. The normal diatom blume of a new tank spreads to the sand. Bought a sand "vacuum" to sift It during water changes and the pos only worked once. Barebottom is much easier to clean. And anyone who says sand looks more natural has never been to a real reef. Most of the reef is located far above the sandbed relatively speaking. A majority of corals are found at least 10' above the floor/sandbed, not 10" like in our tanks.
not really true as they become a nutrition sink .... deep sand beds just collect detritus and rotting stuff.... and they continue rotting... releasing po4 and more .... untill gone.
DSB and a SPS tank with low nutritions and glowing corals is not really happening .... sure you can have good growth but po4 will not be low enough for corals to glow![]()
If our tanks were really meant to "be natural" people would have just sand, and maybe one fish that swims through every hour.................you can never recreate the ultimate natural habitat. For a "display reef tank" I believe that as many aspects that can be incorporated should be.
Please take this with no offense because I honestly consider myself still a reef newbie, even though I've had a reef tank for over 5 years. This is just my opinion and what I strive for
I have found that it depends on what you keep in the tank. When it's almost all corals and just a few fish a sand bed stays clean and doesn't need much maintenance. I had a 12g nano with just one small goby and a bunch of coral and a 1" sand bed and things were great, just did a water change every 2 weeks. When I had a 40 with a ton of fish and I fed them it turned into a sink and I eventually removed it. So it's probably the tank inhabitants that were dirtying the sand. I would say if you go sand and lots of fish your going to have higher maintenance and should upgrade the filtration a bit. Have high flow and higher flow through the sump to help remove waste. That said my tanks with sand always did better than those without, till they got dirty.