Re: Aquatic Plants Digest V2 #404

• To: Aquatic-Plants at actwin_com
• Subject: Re: Aquatic Plants Digest V2 #404
• From: Thomas Price <tprice at u_washington.edu>
• Date: Tue, 24 Dec 1996 08:04:13 -0800 (PST)
• In-Reply-To: <199612240839.DAA22275 at looney_actwin.com>

> From: George Booth <booth at hpmtlgb1_lvld.hp.com>
> 
> > From: Zon Hisham Bin Zainal Abidin <zon at mad_scientist.com>
> > Date: Mon, 23 Dec 1996 17:12:18 +0800
> > 
> > Tank size 5' x 2' x 2'
> > 
> > How do I determine the amount of gravel needed (in kilograms) if:
> 
> > 1)I intend to have a gravel height of 3" throught
> 
> Area of substrate is 60" x 24" = 1440 in^2  
> 3" depth -> 3 in x 1440 in^2 = 4320 in^3
> 4320 in^3 / 19 in^3/pound = 227 pounds
> 227 pounds x 2.2 kg/pound = 500 kg


Yikes!  500kg!! I think George multiplied when he should have divided in
the last line.  227# / 2.2 = 100kg (about). 


 Tom
 

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