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deap gravel beds. are they bad?
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SLACkra
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Joined: 06 Feb 2003
Location: Melbourne, Victoria, Australia

PostPosted: 2005.04.23(Sat)1:03    Post subject: deap gravel beds. are they bad? Reply with quote

OK well is having a deep gravel bed a bad thing to have if your filtration is an hob? this lfs I go to now and then continuously comments about how you should only have a deep gravel bed if you have under gravel filtration and that if you don't have one and you have a deep sand bed you must continiously clean it out.

what are your thoughts and opinons?

andrew
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7.5g Nano Reef
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Psyfalcon
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Joined: 14 Feb 2003
Location: New Jersey

PostPosted: 2005.04.23(Sat)11:57    Post subject: Reply with quote

I'd guess that they are concerned about the deep bed becomeing anaerobic, and producing some bad gases. Ig they get released, it can harm/ kill fish. The UGF would pump water through it and keep that from happening. So would stirring.

The problem is relatively rare with sand, which compacts much more densely. (A situation I consider very much overblown, personally) A gravel bed would take much more time to develop that problem.

But, its always a good idea to siphon the gravel, if nothing else, waste is producing nitrates, so its still good to spiphon and stir to get it out of the system.
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SLACkra
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Joined: 06 Feb 2003
Location: Melbourne, Victoria, Australia

PostPosted: 2005.04.24(Sun)8:40    Post subject: Reply with quote

well I doupt I will have any problems. I gravel vac every time I do a water change. I just did one and in the time that the extra gravel has been there it hasn't gotten too dirty. Its extremely attractive having a nice deep sand bed too Cool

cheers and thanks for the info

andrew
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Devs
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Joined: 14 Mar 2004

PostPosted: 2005.04.26(Tue)12:29    Post subject: Reply with quote

Smile I would be very careful with having too much gravel.As it's new,gravel cleaning is easy.Over time though it can & will add up .All it takes is one bad anaerobic pocket to do your fish so harm. Your NitrAtes tend to go higher over time also because of the waste that gets hidden in the gravel.
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