====================   ADA Newsletter No.101 – 27 Jan. 12  =====================
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Dear Paul,

### TOPICS ###

[EVENT] Takashi Amano’s lecture in Germany on January 28, 2012![E-BOOK] Let’s read “Aqua Journal Digital Edition in English”![PRODUCT] Aqua Screen for the background of your aquascape![KNOW-HOW] Deficient and Excessive Nutrients

## Facebook [ADA Nature Aquarium] http://www.facebook.com/AquaDesignAmano
## Twitter [ADA_Eng] http://twitter.com/ADA_Eng

——————————————————————————–[EVENT] Takashi Amano’s lecture in Germany on January 28, 2012!

Tomorrow, January 28 2012, Takashi Amano, the master of the Nature Aquarium,
comes to the “The Art of the planted Aquarium”, which takes place an aquascape
competition and ceremony award to Hanover. Amano will set up a Nature Aquarium
right in front of you and make a presentation about his expeditions to the
remote outback and nature which is the source of his inspiration for layouts.
Also some events, such as layout competition and ceremony will take place in the
event. Would you be interested in coming to the event with your friends?

DATE: January 28, 2012
11:00 Mr. Amano Lecture Part I
16:00 Mr. Amano Lecture Part II (Live Workshop)

PLACE: Deutsche Messe Hannover
D-30521 Hannover Germany

For more information, please visit our website:

——————————————————————————–[E-BOOK] Let’s read “Aqua Journal Digital Edition in English”!

The Aqua Journal DIGITAL EDITION in ENGLISH is getting many readers in the
world, and it is becoming the most useful source of information to many
hobbyists. It contains latest Nature Aquarium know-how, aquascape galleries,
event information, event report, Takashi Amano’s interview, world report, Q&A,
and more. You can try back issues and the new issue will be released on next
week. Please visit below website and sign up today to become a part of Nature
Aquarium Hobbyists!

Language: English

See samples and more information here:

——————————————————————————–[PRODUCT] Ryuoh stone; suitable forms for an iwagumi layout!

Ryuoh stones have a variety of appearance due to the white line and wrinkles.
Their forms are suitable for an iwagumi layout which evokes a reef. For making
such layout, an important point is to pay attention to the ridge line and the
continuity of stones.

For more information, please visit our website:

——————————————————————————–[KNOW-HOW] Deficient and Excessive Nutrients

Whether in nature or in the aquarium, aquatic plants grow through photosynthesis.
They absorb CO2 for this essential process but from the viewpoint of nutrients,
CO2 is merely a carbon source. Besides carbon, aquatic plants need nitrogen,
phosphorus, potassium as well as trace elements such as iron and manganese for
healthy growth. If these plants are given an opportunity for photosynthesis
only, they will grow big but may show some growth disorder including thin, poor
stems and leaves, yellowed leaves and bleached new buds. The cause of these
symptoms is lack of nutrients. Nutrients are the source of amino acid, nucleic
acid and chlorophyll, crucial to the healthy development of the stems and
leaves of aquatic plants.
In nature, these nutrients are supplied in the form of nutrient salts dissolved
in river water or circulating in lakes and ponds. In the aquarium tank,
however, a certain amount of minerals supplied through the change of tank water
but it is not sufficient in terms of both types and amount. Tap water contains
a relatively high level of calcium and magnesium but no iron and manganese in
most cases. Even if these elements are contained in tap water, hey are most
likely to be combined with other substances and become unusable to aquatic
plants. For nitrogen, phosphorus and potassium which are actively absorbed by
aquatic plants, it is difficult to supplement the required amounts to a Nature
Aquarium which has lush plants just by water change. In nature, a sufficient
amount of these nutrients is supplied by dissolution of organic matters such as
the feces of living organisms and decomposed plants, but they are usually
removed from tap water through the purification process. For Nature Aquarium,
Power Sand and Aqua Soil containing nutrients and organic matters are used for
the substrate for the purpose of nutrient supplementation to aquatic plants.
During the initial stage, mainly nitrogen and minerals are released into the
water from the substrate but the amount will be lower once the substrate is
covered with thriving aquatic plants. Another issue is insufficient supply of
phosphorus and potassium in contrast to sufficient, or at times excessive,
amounts of nitrogen in the water. Another source of nutrients in the aquarium
is fish feces and unconsumed fish foods. These are a source of nitrogen and
phosphorus but cannot be relied on as an effective source of potassium and
trace elements. As a result, Nature Aquarium in the initial stage is prone to
excessive nitrogen and phosphorus, on the one hand, and lack of potassium and
trace elements, on the other. Excessive nitrogen and phosphorus contribute to
the growth of algae, which affects the appearance of the layout and hinders the
healthy growth of aquatic plants.

AQUA JOURNAL Digital Edition
~Your Information Source of Nature Aquarium

[ADA view] Broadcasting from ADA
~Information communication for Nature Aquarium

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