Its probably(at 6 weeks old) cyanobacteria forming in the layers of sand. I
like to change water weekly also, but I am just curious why you are changing
so much, lots of cash going to the LFS and literally down the drain. You
really seem to be rushing it by what you mention you have already, take it
slow, the first 6 months to a year the tank is at its most unstable position
and adding everything too fast will spell disaster.
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, March 21, 2001 2:37 PM
Subject: black sand >?
> Hi,
> I have a 125 gal reef with 150 lbs rock and a 3-4 inch sand bed
,
> it has been running for about 6 weeks . I have noticed some black areas in
> the sand it doesn't seem to smell of hydrogen sulfide , is there a problem
?
> the tank is going through usual cycling stuff algae etc. I'm changing
about
> 45 gals of water weekly and tangs snails and crabs seem to be doing there
> thing . Any help will be appreaciated.
>
>
> Thank you
>
> Charlie
> ________________________________________
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