Going bare bottom on an already setup tank?

craftycamper

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Hey all, I have setup my first reef tank with about 2" of sand. Its been running for a few months and it is doing well! However, I will be moving in the next year and I am considering taking the chance to switch to bare bottom as I anticipate having to move a couple more times with my tanks. Removing the sand will make my life a heck of a lot easier and I wont risk crashing the tank when I disturb it to break stuff down.

Now onto the questions:
Have any of you gone BB and regretted it and why?
How do you deal with the lights reflecting off of the bottom? I was thinking about laying down a piece of starboard - do you silicone it down?
What biological filtration concerns should I have? I have about 35-40 lbs of rock in my 50g system. I was thinking of adding those bio bricks as I remove the sand in order to not crash my biofilter.
How do you keep the bottom clean of algae?
Anything else I should consider?

More info about the system: Red sea reefer 200, mixed reef with mostly lps and sps. I use a roller mat and a skimmer for export, I dont keep any fish that require a sandbed.

If I go forward with this, I plan on siphoning out my sand with water changes over the next couple months and putting down the starboard when I pull everything in my move.
 
I don't anything special, just set the tank up without sand.

Examples
PXL_20251108_012602277~2.jpg


PXL_20260510_171216765.MP~3.jpg
 
Unless you have wrasses that need sand.
I am doing about 30% of the left of my tank sand...Using mp40 to push it to the left and keep it there.
 
Seconding the others — your rock is the biofilter, and 35–40 lbs in a 50g is plenty, so I'd skip the bricks entirely. The siphon-it-out-over-water-changes plan is exactly the right call too; pulling the sand gradually instead of all at once is what keeps you from a nutrient spike during the transition.

The one question I don't think got a full answer is keeping the bottom clean. The whole payoff of bare bottom is that detritus has nowhere to hide — but that only pays off if your flow actually sweeps it somewhere. Aim your powerheads so junk stays suspended and collects in a spot you can siphon out, rather than settling into a dead corner. BB isn't a cyano cure by itself; the low-flow dead spots are still where it'll show up. With a roller mat and skimmer already handling export, you're set up well for it — you'll mostly just be siphoning the odd patch during water changes.

For the regret question: most people I've seen go bare bottom don't look back, and the few who do usually just missed the look of sand or later wanted a sand-dependent fish.
 
Seconding the others — your rock is the biofilter, and 35–40 lbs in a 50g is plenty, so I'd skip the bricks entirely. The siphon-it-out-over-water-changes plan is exactly the right call too; pulling the sand gradually instead of all at once is what keeps you from a nutrient spike during the transition.

The one question I don't think got a full answer is keeping the bottom clean. The whole payoff of bare bottom is that detritus has nowhere to hide — but that only pays off if your flow actually sweeps it somewhere. Aim your powerheads so junk stays suspended and collects in a spot you can siphon out, rather than settling into a dead corner. BB isn't a cyano cure by itself; the low-flow dead spots are still where it'll show up. With a roller mat and skimmer already handling export, you're set up well for it — you'll mostly just be siphoning the odd patch during water changes.

For the regret question: most people I've seen go bare bottom don't look back, and the few who do usually just missed the look of sand or later wanted a sand-dependent fish.
How True I loved my Diamond goby fun to watch better than any other fish for entertainment. To your point of keeping the d
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etrius suspended is a good thought. I have the perfect filter to collect it . Look at a Marineland water clarifier . It has multiple uses
 

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