where can i find quality rocks for a new 10G scape? - The Planted Tank Forum

 
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post #1 of 9 (permalink) Old 08-04-2012, 01:46 AM Thread Starter
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Question where can i find quality rocks for a new 10G scape?

could i just find some outside??
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post #2 of 9 (permalink) Old 08-04-2012, 02:22 AM
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I'm using some from outside. maintenance people drop it off for my wife's garden.
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post #3 of 9 (permalink) Old 08-04-2012, 03:11 AM
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The Driftwood Store sells nice rocks and you'll find them in the SnS here but there are hard to come by so be on the look out all the time because free is good.
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post #4 of 9 (permalink) Old 08-04-2012, 03:53 AM Thread Starter
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would granite be a nice rock to put into the tank
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post #5 of 9 (permalink) Old 08-04-2012, 03:55 AM
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Rocks that are outside, freshly 'harvested' may present some problems, but with a little care many rock are useful.

Select the location away from pollutants.
Stay away from roads. Oil and other fluids dripping from vehicles, and salt (snow) can linger on the rocks.
Stay away from agricultural fields and gardens where pesticides are used.
Get permission from the land owner.
Do not collect in parks of any kind.
If the rock looks like it is already crumbling, it will do that in the tank, too.
Rocks that are obviously metal bearing are not good. Copper usually looks somewhat blue-green, iron will usually rust, iron pyrite will look shiny, sort of like gold.
I have used rocks with a small trace of iron in a large tank and not had issues. (Small amount = a few spots about the size of a dime in 125 gallon tank)

Rocks may be limestone or some variation. Put a little acid on them. If they bubble, they are probably not good in a soft water tank. Acids to try:
Vinegar, API Nitrate test bottle #1, Muriatic Acid (swimming pool supply) BE CAREFUL Acids can harm you.
Another way to test rocks is to put them in a bucket of water (especially used aquarium water, but tap water is fine) and test before and every few days while the rocks soak. GH, KH, pH, TDS. If there are tiny changes it is probably OK If there are larger changes then this suggests the rocks will affect the aquarium water.

If the rocks come from a stream or lake rinse well in bleach, then rinse with dechlor in the water. If you still smell chlorine put the rocks in the sun and turn them around every few hours. Chlorine will evaporate.
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post #6 of 9 (permalink) Old 08-04-2012, 03:56 AM
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Granite is usually hard and chemically inert, but may have metals.
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post #7 of 9 (permalink) Old 08-04-2012, 04:11 AM Thread Starter
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what is your suggestion on where to find rocks and which type of rocks are the best
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post #8 of 9 (permalink) Old 08-04-2012, 07:50 PM Thread Starter
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ive found rocks but there from a stream that has lots of iron in the water what should i do
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post #9 of 9 (permalink) Old 08-05-2012, 04:40 AM
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If it is not the rocks with iron, just the water, then you will be fine. Scrub the rocks clean, soak in a little bleach to kill aquatic parasites or diseases. Rinse with some dechlor. Test the rocks to be sure they are not limestone.

Around here I have 2 basic sources for rocks.
I work for a landscape company. When we do an install we often clear the garden of larger rocks (2" and larger is common). The native stones in some gardens is really nice. I have a tank with red chert collected from these gardens. Chert was used by the local Native Americans for arrowheads.
The other source is all the stores that cater to masons, landscape and related fields. Find your local stores by looking for brick, soil, bark, mulch, masonry, landscape and similar headings. These stores sell the material by the truckload or by the bag. Either way, it is a lot cheaper than buying rock in the fish store.
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