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Unread 09/26/2020, 11:28 AM   #1
Sk8r
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Join Date: Feb 2006
Location: Spokane WA
Posts: 34,628
Blog Entries: 55
Water movement under rocks...achieved.

I build arches above the sand, putting 'pillar rocks' lowestk and setting arched rocls above them, so that my rockwork is fairly open, though massive.

One prioblem remains which I think is a sneaky and common one: even if you have fairly decent subsand critters: Gunk under the rocks

Haven't had a functioning Gyre or other water movement in there for a whild. I ggt a new Gyre recently, installed it, and the water moved, for sure. Thy fish were a little addled at first. But outside of a really nice (for one's size) skimmer, I'm convinced positioning the various water movement devices to sweep under the rock is a good thing. Gyres do it by the nature of what they do, but others can be aimed to do it, and I think it a gpod thing tp have that crud move on to the sump. The water looks brilliantly clear this morning.


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Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.
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Unread 10/01/2020, 04:38 AM   #2
Axel33
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Join Date: Oct 2020
Posts: 19
why do you need so much water movement? do you have SPS?
I have a bunch of sand in my tank and my lower lvl is not getting much movement. But I see sometimes stuff that might grow into alges and I use a turkey bster and turn over the sand.
I also have brissle warms, nassaris snails and a blue spotted goby but still need to do the turkey baster like every 5 day's.


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Unread 10/03/2020, 10:26 PM   #3
jeremy007
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Join Date: Feb 2008
Location: Williamsburg VA
Posts: 50
More surface area for the rock as well with bacteria


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