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post #1 of 11 (permalink) Old 07-09-2008, 02:04 AM Thread Starter
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grit qu

the pool store sells 50lb poolfilter sand
its stage 5
50 grit

what does the girt mean
will that do?
i see everyone using something like 20

any advice?
or can someone explain it to be so i know what to look for

thanks

However, there's always a however.
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post #2 of 11 (permalink) Old 07-09-2008, 02:32 AM
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I'm no big expert on this, but think of grit as the size of screen the substrate will filter through. Depending upon the specifics of your tank, it seems that the general recommendation is particles between 1 and 3 millimeters.

...

Ah! Here, I found it: Grit - The nominal size of abrasive particles corresponding to the number of openings per inch in a screen through which the particles can just pass. -- IOW, if one were to choose 20 bits from 20 grit substrate and line them up, they would measure about an inch. 50 grit particles are smaller than 20 grit.

Hope that helps.
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post #3 of 11 (permalink) Old 07-11-2008, 07:25 PM Thread Starter
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so should this sand be used in my future planted 90 this tank will be set up for discus



thanks for a great reply!!!

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post #4 of 11 (permalink) Old 07-12-2008, 01:25 AM
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I typed "aquarium discus substrate" into Google and found many informative links. Among the info there:

"Discus fish do not root around in the substrate like other cichlids, so you do not have to be so conscious of getting the right gravel. The only thing that should be considered is that it doesn't consist of calcium or any other chemical that will increase the ph level of the water over time. You can ask for gravel like this, that is either man-made or natural, from your local fish shop."

Hope that helps. If I ever find about a grand lying around, I'd love to do a discus tank with custom cabinet... Such beautiful fish!
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post #5 of 11 (permalink) Old 07-12-2008, 01:07 PM
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The higher the grit number the finer the grain. You don't want too fine a grained sand for a tank otherwise your plants won't be able to root well.

Several people on the forum have used pool filter sand I think though. Wait for one of them to chime in here and see what their results have been.
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post #6 of 11 (permalink) Old 07-13-2008, 04:25 AM Thread Starter
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alright thanks...

yea i just bought a really nice cabinet for the tank
pics will be up soon
just have to get some sand in but
i dont know if this sand is good??

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post #7 of 11 (permalink) Old 07-14-2008, 03:19 PM Thread Starter
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hmmm

i guess this would be too smalll for a layer of laterite the laterite will come right through....


i guess that leaves me with root tabs and flourish...

i think it should work anyone else? any input?

it is greatly appericated


thanks

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post #8 of 11 (permalink) Old 07-21-2008, 12:41 PM Thread Starter
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anyone???


will this be too hard to clean????



will it compact to easily???

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post #9 of 11 (permalink) Old 07-22-2008, 02:44 AM
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Sorry, metfan; don't know enough about substrates to be of any help.

<<bump>>
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post #10 of 11 (permalink) Old 07-22-2008, 03:22 AM
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it MAY be diatomaceous earth
http://en.wikipedia.org/wiki/Diatomaceous_earth
Diatomaceous earth is like Mother Nature's super activated charcoal (carbon). There are Diatom filters for aquariums, but they are high maintenance and used only now and then to "polish" the water.
http://www.aquariumguys.com/aquarium...m-filters.html
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post #11 of 11 (permalink) Old 07-22-2008, 03:23 AM
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Also found this.... might help
http://www.poolcenter.com/filter.htm
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