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Old 10-28-2004, 01:45 AM   #1
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Question about substrate...

I'm starting a new 90 gal SW tank and I was thinking about mixing live sand with dry Carib Sea Aragamax ( probably a 50-50 mix). Will this be enough to seed my DSB? I've been getting mixed reviews at my lfs. They claim that the more LS, the better. But if I'm gonna cycle my tank anyway, will this matter? TIA!
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Old 10-28-2004, 08:39 AM   #2
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well more sand creates more area for denitrification. but i do agree that you do not need to use only LS, you can definitly just seed dry sand with LS, just let is cycle a while. how deep were you planning on going with the sand bed?
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Old 10-28-2004, 12:06 PM   #3
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most people recommend "a few cups" of live sand at least. 50/ 50 should be great.
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Old 10-28-2004, 04:10 PM   #4
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Thanks for replying! Kate, I was thinking about a 3-4 inch bed. This should be deep enough, right?
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Old 10-28-2004, 05:31 PM   #5
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For larger tanks deeper beds are recommended. 3" is usually considered the minimum for around a 55g tank, closer to 6" for big tanks.
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Old 10-29-2004, 02:07 AM   #6
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i would stick to around 3-4 in. a true DSB is around 7 or 8 in., but they also come with quite a bit of baggage, esp for the new aquarist- they can actually become anaerobic in areas, and if those areas get disturbed they can release poisionous hydrogen sulfide gas which will result in fish death. DSBs are also linked to large algae blooms since they can become nutrient sinks, this is just IME, i do know people with very sucessful DSB tanks tho.

but yea 3-4 should be good. a nice area for denitrifying bacteria to grow.

HTH
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Old 10-29-2004, 06:45 AM   #7
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On the subject, has anyone in the GTA (Greater Tyranna Area) a cup or two of live sand that I could beg, borrow or steal for seeding the DSB in my new FO (but none yet) WLR. Jeff
PM or write me here. As I set up this tank, I shall be asking lots of questions.
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