Granite for planted tank - The Planted Tank Forum
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post #1 of 8 (permalink) Old 05-17-2018, 08:27 PM Thread Starter
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Granite for planted tank

Hi Guys,

Was curious to know anyone's thoughts using granite in an Iwagumi tank. also how about crushed granite as an inert substrate. Can I mix a nutrient rich soil into the gravel. I ordered some Monte Carlo and have mid-high light plants, some stems. pressurized CO2, etc.

Any advice would be appreciated.

Thank you,
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post #2 of 8 (permalink) Old 05-17-2018, 08:36 PM
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My 40B uses a mix of red granite and Flourite.. Works well. bit coarse as far as planting goes..
don't "do" carpets so I'll let others chime in but don't see it as very good for that..

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post #3 of 8 (permalink) Old 05-17-2018, 08:46 PM
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Sorry about your toe there, you do that while breaking up the granite? Haha. Granite is more than likely going to be fine. Granite consists of predominantly silica. It may have a little bit of Ca, and some other minerals that might leach a little bit, but should not be to a toxic level, nor should it cause too much of a parameter issue. I think it would look pretty good as an iwagumi stone! What you could do - give them a bath in a muriatic acid:water solution. I don't think you're going to see much, if any, reaction, but this just eats away all the superficial stuff.

As far as using it as a sub...I don't see why not if you can get it fine enough. I'd stick with something like Black Diamond Blasting Sand(BDBS) or Pool Filter Sand(PFS) though and skip adding anything else. Water column dosing is really all that's needed, I have no problems growing carpets of DHG and HC in my PFS on my 10 gallon.
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post #4 of 8 (permalink) Old 05-17-2018, 08:53 PM Thread Starter
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thanks guys for the quick responses.

mgeroges:
- I actually accidentally kicked the stinking granite w/out shoes and socks on. That kinda hurt! lol. Thanks for the info! Where would one find muriatic acid as I have never used it before. Pool store?? Also what would the acid/water ratio be?
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post #5 of 8 (permalink) Old 05-17-2018, 08:58 PM
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suppose I should add a lot of sand is "granite derived"..

Quote:
Quartz definitely dominates in most sandy environments, but it is usually accompanied by feldspars. Feldspars are only moderately stable in atmospheric conditions, but their overall volume in common rocks is huge. More than half of the whole crust is composed of feldspars. Other common rock-forming minerals like amphiboles and micas also frequently occur in sand. Some common minerals in certain rocks like olivine and pyroxenes occur in sand in smaller volume because their resistance to weathering is nothing to brag about.

However, there are enough sandy beaches that are mostly composed of pyroxenes and olivine with magnetite.
What is Sand - Overview and Geology

Stupid random link for the day..

Really cool sand:

Quote:
Here is an example of mature sand sample from USA (St. Peter Sandstone from the Ordovician Period). It is composed of almost pure and well-rounded quartz grains. This is what eventually happens if we give enough time for the nature to chemically destroy most other minerals that were present in the source rocks.
https://www.walmart.com/ip/White-Cry...&wl13=&veh=sem
sorry, just for fun.

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post #6 of 8 (permalink) Old 05-17-2018, 08:59 PM
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My local Home Depot has it -
https://www.homedepot.com/p/Klean-St...5006/202690263

You can check by zip to see if yours carries it. As far as mixing, I like to keep mine strong, though it's probably unnecessary. 5:1 water:muriatic acid. Muriatic acid = Hydrochloric acid by the way. Stuff is cheap so I don't worry about it, but definitely dilute it before disposing if you plan to pour it down a drain. The stuff will eat up your pipes, or melt them if they're PVC.
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post #7 of 8 (permalink) Old 05-17-2018, 09:09 PM
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Don't dilute.. And keep in mind:
Quote:
So much heat is released that the solution may boil very violently, splashing concentrated acid out of the container! If you add acid to water, the solution that forms is very dilute and the small amount of heat released is not enough to vaporize and spatter it. So Always Add Acid to water, and never the reverse.
NEVER add water to concentrated acids..
Never.. never..never..
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post #8 of 8 (permalink) Old 05-17-2018, 09:12 PM
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Listen to this guy! Lol.
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