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in this video tutorial we are talking about Aquarium Rocks
Usually we are setting our Aquarium with woods and plants
but olso a rocks setting is very beautiful 
and is usualy named "Iwagumi"
Is very important to know rocks characteristics
because the wrong choice can cause changes of water values
You can trust in what the seller says
or make a "home made" carbonate test
put a drop of muriatic acid or simple limescale (Viakal) and observe the reaction
if form of bubbles or a "frying" means that the rock is limestone
and increase the hardness of your water
Remember that before introduce rocks in your tank
you must to wash and sterilize them with brushes 
and boiling them for a few minutes
to eliminate bacteria and insects
the stones that you found in commerce are those
Lava rocks
Pagoda rocks
Quartz: usually in gravel
River pebbles
Sodalite rocks
Rainbow rocks
Slate rocks
and ADA Stone by Takashi Amano style
Mountain stone, Dragon Stone and Seiryu Stone
Let's look at them one by one
LAVA ROCKS:
not affect the values ​​of the water
very suitable for the infiltration of nitrifying bacteria
very light, and useful for the foothold of any plants such as Anubias or mosses.
PAGODA STONE:
does not affect the values ​​of water
brown and gray composed by non-heterogeneous layers, wood effect.
QUARTZ:
does not affect the values ​​of water
various grain sizes and colors
shiny effect, effect a bit synthetic
RIVER PEBBLES:
affect the values ​​of altering water hardness
various shapes and colors, smoothed by the passage of water
recommended for cichlid fishes
remeber to make carbonate test for rocks that you find near the river
SODALITE STONES:
silicate origin, that does not affect the water values
pink, blue or yellow very shiny and bright, very eye-catching effect.
RAINBOW ROCK:
sedimentary stones, not influence the values ​​of water
originating in the United States, red rose and white often with central holes,
very bright and protagonists in general view.
SLATE:
also called stone blackboard, does not affect the values ​​of water
derived from fossilized sediments of silt, is located in slabs
steps of dark gray or black forming cusps and sharp corners
Those are the ADA stones by Takashy Amano
SEIRYU ​​STONE:
as the Stone Mountain, are influencing the values ​​slightly increasing the hardness of the water,
very elegant and suitable for the so-called fittings Iwagumi
gray reminiscent mountains, very used by Amano
DRAGON STONE:
does not affect the values ​​of water
very elaborate, light brown with shades of red or green
very fashion and design at this time
attention, clean very well before inserting because is full of earth and mud
if you want to set up your tank with BRICKS, JARS or FAIENCE
you must to know that not affect the values ​​of the water
there are suitable for environments of possible reality in the beds of rivers
grateful for fishes hide
and help the growth of beneficial bacteria in the cycle of nitrogen
If you want to counter the hardness caused by carbonate
use a "allophone" fund.
if you want to know more aboute water values controll
and another type of aquarium set up like woods
click on the link 
usually a nice mix of plants and woods creates a beautiful scene
thank you for watching this video tutorial
write a comment for any questions and click on like
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