How Much Gravel?

[Bigpig]

How many KG of gravel for a tank size 120cm long x 64cm high x 45cm wide 320l

Thanks

 

[nmonks]

No simple answer: depends on what you want to do. If you have an undergravel filter, then you'll need an ~8 cm depth, and from my experience that means at least two 25 kg bags of pea gravel for medium sized tanks.

If you're growing plants, you'll be using gravel alongside something rich in nutrients like aquatic soil mixed with silica sand. So the gravel is just used at the top for decorative purposes, maybe 1-2 cm on top of at least 4-5 cm of soil/sand mix. So a single 25 kg bag would be enough.

If all you want is to hide the glass at the bottom of the tank, and you're decorating with rocks and bogwood (or plants that don't need substrate, like Java fern and Anubias) then you don't need much gravel at all. A 25 kg bag will be ample.

Cheers, Neale

 

[steve01]

It will depend on how thick you want it but for my tank which is 100 cmx40x50 I used 25k you will probably need in the region of 30 kilo.

Steve

 

[Bigpig]

It will be a planted tank with Tropica Plant Substrate under the gravel

 

[OldMan47]

By using the substrate under the gravel, the gravel becomes just a decorative cover for the substrate. At that point 25Kg should be enough for that cap.

 

[TheMerovingian]

It will depend on how thick you want it but for my tank which is 100 cmx40x50 I used 25k you will probably need in the region of 30 kilo.

Steve

my tank will be the same as yours.

How deep did you make yours?

 

[steve01]

I have made mine various depths from 1 to 3 inches.

Steve.

 

[alysonpeaches]

I have made mine various depths from 1 to 3 inches.

Steve.

This may or may not help. When I was in your position I went to the local fish shop and asked how much gravel I needed. He asked me to show him a tank same size as mine, which I did. The guy then proceeded to line up the bags of gravel (still sealed) across the bottom of the tank and he said I would need as many as it took to cover the bottom. I cant remember what the bags weighed, but I bought about 5 bags for a 32 inch tank. I was having plants but nothing under the gravel. This has given me 3-4 cm of gravel.

 

[Wrams]

My gravel bed is always around the inch and a half - 2 inch depth mark. . I suppose its everyone to there own...But, i'm only a newbie myself...