How many bags Seachem Onyx will I need?

jtoneil

AC Members
Oct 17, 2004
8
0
0
120 Gallon tank and the bags of Seachem Onyx weigh 15.4 pounds. How many bags? I want it deep enough to securely hold my plants. 15 bags would probably do it but that will cost me $250..haha...I'll still do it though...the price of my new obsession...lol.....


John
 
What is the footprint of your tank? The width and lengt of the tank? I used 7 bags for my 48"X18" tank. It gives me ~2" up front sloped to ~4" in back.
There is a calculator for figuring substrate depth using "x" material if I can only remember...ah ha!
http://www.plantedtank.net/substratecalculator.html

They don't have Onyx as a choice, you can use Flourite to calculate and add a couple bags for the Onyx sand, or if you're using Onyx gravel stick with the Flourite calc.
HTH
 
Last edited:
AquariaCentral.com