Sand bed calculator question

[althea2you]

OK.. i saw a chart somehwere and i cannot remember where.. some site that sold tanks... anyways.. it said for a 90g and a 3in. sand bed i would need 248 pounds of sand... i just did this calculator (scroll all the way down to find the sand bed calc.) here: Aquarium Calculator - Unit Conversion Tables

and this one said i only needed 148 pounds of sand to get 3 inches..... what? which is right? how do i figure out exactly how much sand i need to buy?

 

[BarbMazz]

Here's another calculator that takes into account the weight of the sand to be used:

Reef Central Online Community

 

[naperenterprise]

Try this one:

Reef Central Online Community

 

[naperenterprise]

Barb beat me to it

 

[althea2you]

that one tells me even less... these dont seem to be very accurate... anyone know what a 90 g should have in it for 3 in.?

 

[BoomerD]

Don't know for sure, and every sand type and grain size will be somewhat different, but when I set my 90 up several years ago, I used 200 lbs of Southdown and got a sandbed that was between 4 and 5" thick.

 

[althea2you]

Don't know for sure, and every sand type and grain size will be somewhat different, but when I set my 90 up several years ago, I used 200 lbs of Southdown and got a sandbed that was between 4 and 5" thick.

ok! thanks Boomer. i will go with 150 pounds of sand then....see where im at, if i want more i can add more! thanks!

 

[BigAl07]

Definitely go slow and don't put it all in at once. I did that and it's a PITA to get nice wet sand OUT!!

 

[RyanG]

I was always told that one pound per gal gets you two inches roughly so a pound and a half per gallon should get you approximately 3 inches.