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How much gravel for 20 gallons?l

Discussion in 'Tropical Discussion' started by RainGamma, Jul 25, 2019.

  1. RainGamma

    RainGamma Fish Fanatic

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  2. Kritastrophe

    Kritastrophe Fish Fanatic

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    About 36 lbs for two inches thick or 18 lbs for one inch. I assumed 30.3 was length of tank and 12.3 was the width. Still be about the same if the width was 12.5, but I assumed 12.5 was the height.
     
  3. RainGamma

    RainGamma Fish Fanatic

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    So 36 ponds of gravel?
     
  4. Kritastrophe

    Kritastrophe Fish Fanatic

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    If you meant pounds, yes.
     
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  5. PheonixKingZ

    PheonixKingZ Fish Herder
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    If you got a 50 lb, bag, you would have gravel for other tanks. :)
     
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  6. AbbeysDad

    AbbeysDad Member

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    It all depends on your target depth, and although not precise, 1lb. per gallon is a fair rule.
     
  7. Bosslady

    Bosslady New Member

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    I thought it was 1lb per gallon, because that is what I read.


    Sent from my iPhone using Tapatalk
     
  8. Byron

    Byron Member

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    Before deciding on gravel, what fish are you intending for this tank? Some suitable to this sized tank will need sand, and sand is generally a better substrate.
     
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  9. Kritastrophe

    Kritastrophe Fish Fanatic

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    If you go by the two inch rule I based my calculations on the bottom area of his tank floor. If raingamma only wants an inch depth coverage over area of tank floor he would only need 18 lbs.
     
  10. RainGamma

    RainGamma Fish Fanatic

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    Well I already had gravel to use I have a Betta
     
  11. Byron

    Byron Member

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    OK, that's not an issue. I would suggest around 1.5 inch depth when spread flat, then you can aquascape it to have it slightly more in back and less in front.
     
  12. PheonixKingZ

    PheonixKingZ Fish Herder
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    That’s was my question to @Byron. :)

    Certain species of fish, (Cory cats, and Loaches) need sand to have a happy life. :)
     
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  13. PheonixKingZ

    PheonixKingZ Fish Herder
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    I just found this website....http://www.howmanyfish.com/how-much-gravel.htm

    And I used the measurements from your tank, Andy I came up with....

    • 36 pounds of gravel.
    • 42 pounds of dry sand.
    • And 54 pounds of wet sand.
    If you got play sand, (they come in 50lb bags, at Lowe’s for just $4, a killer deal) not only does it look great, but it is also easier to “keep” in a tank. JMO. ;)
     
  14. Byron

    Byron Member

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    I am skeptical of their calculations, or rather, I'd be interested in why they think one needs so much substrate. Putting 42 pounds of dry sand in a 20g substrate is around double what you need. But it is nice to have extra as you say, good point.
     
  15. PheonixKingZ

    PheonixKingZ Fish Herder
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    I was kind of skeptical of that also @Byron , I would think that the gravel and the sand would weigh the same? Wouldn’t you? :)
     

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