Caluerpa will not stop hydrogen sulfide from building up in the sand bed.
About the best thing you can do to TRY and stop that from happening is to
load the sand bed with Nassarius snails. They burrow in the sand and will
help keep it slowly stirred up. Personally, if it was me, I would add
caleurpa to my sump. Light it and keep it on 24-7. I think it will help you
stay ahead of any nutrients that may otherwise build up.
Shane C.

        -----Original Message-----
        From:   [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]]
        Sent:   Tuesday, February 20, 2001 5:59 PM
        To:     [EMAIL PROTECTED]
        Subject:        Re: need help (Sand beds)

        In my 30 gallon tank I have about sand bed that goes anywhere from
less then 
        1 to around 5 inches. (damsel has tunnles dug under the rocks) Right
now i 
        have 3 fish and about 15 or so corals, couple snails and maybe 5 or
6 
        hermits. I currently do not have a sump. I do have one of Ron's 3
inch 
        skimmers that kicks. I do plan on adding a sump, with maybe some
more live 
        rock and more sand. I have heard all these reports about sand beds
tossing 
        out hydrogen sulfide. Will the caulerpa prevent this is anyway. I
thought the 
        point of a DSB was for the annoxic zones to convert nitrate to
nitrogen gas. 
        And what keeps the caulerpa from showing up in the main tank. Other
then 
        tangs. I guess basically my question is should i add macro algae to
my sump 
        once i add it? 
        ________________________________________

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