Rubble, Rock or NOTHING in the Sump?

BRS

Do you prefer rubble rock, larger rocks or no rock in your sump and why?

  • Rubble

    Votes: 132 36.1%
  • Larger Rock

    Votes: 101 27.6%
  • Nothing

    Votes: 91 24.9%
  • Other (please explain)

    Votes: 42 11.5%

  • Total voters
    366

Uncle99

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Three Marine Pure Blocks for me.
The SA they provide is huge.
I never even had to add any chaeto or light either and they mop up great.
Had them forever. 10C42DDC-B073-4ACC-AF9B-832389C1522D.jpeg
 

Reefvision

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I have small amount of rubble rock in refugium section not lit anymore as nitrate is reading 0 with Red Sea testing. Also only filimentous algea was growing. I have a separate section with plastic bucket 1/2 full of live sand approx 3gals worth that is basically in oxygenated as only surface flows over bucket and cal reactor sits on top of sand instead of tbottom of sump . I also use matrix and scintered rings .
 

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Peace River

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I have some small rocks and Brightwell bricks in my sumps mainly for use when setting up new tanks.
 

Auntjemimma

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I currently have 2 Brightwell ceramic plates in mine but not sure they really add much. Sponges love to grow on them but I don't care for sponges in my tanks. They become a nuisance and choke out corals.

I don't think adding rubble is worth it unless you specifically want an area for detritus to collect for pods.
These add A TON of surface area for bacteria / pods. Super beneficial imo.
 

srobertb

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This is something I'm strongly considering, can you elaborate on ? Sand used, and the reactors?
It’s been awhile and my info may be dated: Fluidized sand beds will convert ammonia to nitrates effectively but to convert nitrate to nitrogen you need a dark anaerobic (no light, low O2, and low flow) area with high surface area.
 

shneerf

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Sand is way more surface area and 2 inches deep is plenty oxygenated. One volume of sand is thousands to hundreds of thousands times more surface area than one volume of rock.
 

[email protected]

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I had rubble in my sump - but I started my tank that way. I just removed the rubble in anticipation of using the space for some of the LR that I am replacing when I redo my aquascape in a about 3 Weeks. I will probably keep some of the extra LR from the DT in the sump until I see the new aquascape has started its bio filter job.
 

Shooter6

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It’s been awhile and my info may be dated: Fluidized sand beds will convert ammonia to nitrates effectively but to convert nitrate to nitrogen you need a dark anaerobic (no light, low O2, and low flow) area with high surface area.
I guess I should have been more specific, as I understand the theory of the fluidized sandbed, many are in solid colored (dark) containers.
My question about details was in reference to the picture you posted.
What reactors are you using, and what sand? I would think that coral based sand would grind against itself and slowly flush out the reactors in a fine sediment that would collect either I. The sump or display?
 

rtparty

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These add A TON of surface area for bacteria / pods. Super beneficial imo.
That's what they say but real world results haven't shown me any benefits. They are much more a place for detrirtus to become trapped and then flow through them is restricted or blocked. I could pull mine and likely not see a single issue from it.

This is actually my plan for the my new 260g peninsula. I will take at least one of them out to insta cycle the new tank.
 

Shooter6

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Sand is way more surface area and 2 inches deep is plenty oxygenated. One volume of sand is thousands to hundreds of thousands times more surface area than one volume of rock.
Collects more detritus too though, but the fluidized sandbed would counter that issue.
I was considering a mesh container of sand also, as this is a bare bottom system for high flow.
 

vetteguy53081

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1. Do you prefer rubble rock, larger rocks or no rock in your sump and why?

I utilize larger rock for more surface area as water passes through the sump

2. Have you noticed a difference in the stability of your tank with the addition of more rock in your sump?


Hard to tell as I have multiple tanks which are very stable but im sure it is a contributor and factor
 
BRS

Have you ever had a reef tank with no sump and how did it go?

  • YES and it was just fine

    Votes: 312 58.4%
  • YES but it was difficult

    Votes: 99 18.5%
  • NO

    Votes: 112 21.0%
  • Other (please explain)

    Votes: 11 2.1%
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