need amount of gravel ok to use in tank?

  1. L

    LadyBug82 Valued Member Member

    how much gravel should i use for my 40g fish tank? i have 7 5lb bags of gravel for my tank is that enough?
  2. I keep fish

    I keep fish Well Known Member Member

    one more bag would be better as 1lb per gallon.
  3. pirahnah3

    pirahnah3 Fishlore VIP Member

    anything between a pound to 2 pounds per gallon, all depends on how you want to scape your tank, I tend to use a bit more as I like to make a bit of a slope with it in the tank from a back point to a more focal point of the tank. Really its all about looks once you get the bottom decently covered.

  4. OP

    LadyBug82 Valued Member Member

    ok once i get more money ill get two bags a 5lb and a 2lb.
  5. Jaysee

    Jaysee Fishlore Legend Member

    Since you are dealing with small bags, I would use what you have and add one at a time till it's where you want it. How much you really need is dependent on what you want to do with it, as pirahnah said.

    If it's a 40 breeder, then it'll need 50% more substrate since it's got a 50% larger footprint than a standard 12 inch wide tank.
  6. OP

    LadyBug82 Valued Member Member

    i don't have a 40g breeder tho i just have a 40g long tank. but im going to use what i have and go from there tho.
  7. Jayha68

    Jayha68 Valued Member Member

    I went with the 1lb per gallon in my 48 bowfront corner tank and it seems excessive now, wish I'd known I could put less in there when I did it! I have about 3-3.5 inches of gravel in there.
  8. soltarianknight

    soltarianknight Fishlore VIP Member

    meh, i went over that for my 29, i have 3" of gravel in there. BTW, i just look at how thick it covers the bottom.
  9. striker

    striker Valued Member Member

    I would also say it depends on how you want your tank to look. Typically it should have 1-2 pounds of gravel for each gallon of water. So i would put 40 lbs of gravel in a 40 gallon.
  10. Aquarist

    Aquarist Fishlore Legend Member

    Good morning,

    :animal0068:I have moved your thread from Freshwater Beginners to Freshwater Substrates/Gravel-Sand section of the forum.


  11. OP

    LadyBug82 Valued Member Member

    thank you ken
  12. Redshark1

    Redshark1 Well Known Member Member

    This is what works for me:

    Gravel required = 1Kg per 120 square cm of aquarium floor

    Hope it helps.
  13. L

    Lupinus Valued Member Member

    General rule of thumb is 1-2 pounds per gallon. But that will vary a bit based on the exact dimensions of the tank and personal taste. A 40 breeder is going to need more substrate than a 40 long, for example.