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#### msebar

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I decided to go with Activ Flora, how many 16 lb bages do I need for a 180 gallon tank at 2 inces in height.

#### msebar

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does thatpetplace give free shipping over \$100?

I think I will start with 12 bags

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I usually figure about two pound's per gallon.

#### Mrnbo

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that's a lot of money...

#### GuppyGuppyGuppyGuppyGuppy

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There's this website I know of that's pretty good for stuff like that. You can use it to find the specific weight of bags, as well as particle sizes of certain substrates. If you can find the volume of the desired substrate, you can measure your tank and get the volume of it. Then put the relevant information into the site and it can help you with calculations of how much you need.

I forget the name exactly but I remember it kinda looks like goggles.

#### lamiskool

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hehe i have no idea but jealous that you have such a large tank! have fun with it and post pics of it when done!

#### GuppyGuppyGuppyGuppyGuppy

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I decided to go with Activ Flora, how many 16 lb bages do I need for a 180 gallon tank at 2 inces in height.
I can't remember the name of that website, so I'll do the calculations for you.

72 1/2 x 24 1/2 x 25 1/2 = 45294.375cu in
2/25.5 = x/45294.375
.07843 = x/45294.375
x = 3552cu in
1 gal = 231cu in
3552/231 = 15.378gal

You need approximately 15.378 gallons of Activ Flora to fill your tank. That won't help you.

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