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What is the difference between the four ultrasonic devices to kill
algae ?
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Which kind of algae are killed by which device and how quick ?
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Which algae are the most difficult to kill ?
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After having the ultrasonic device a couple of weeks in operation it
looks as if there
more algae then before. What happened ?
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Should I have the device continuously operating ?
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Can I lenghten the transducer cable ?
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Can I shorten the transducer cable ?
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Where should the transducer best be placed ?
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How do I know if the transducer is working?
1. What
is the difference between the four ultrasonic devices to kill algae
?
Although they all have the same way of operation (killing the algae by
ripping the vacuole cells in which the life functions of the
algae are housed, by under water sound vibrations),they all
have a different capacity and range of action. Each kind of device
is especially made for a certain field of application, which are all
described in the web site.
TOP
2. Which
kind of algae are killed by which device and how quick ?
There exist at least
twenty
thousand kinds of algae, which react in various ways after their
demise. The most common algae are the
so-called “roaming algae, which are brought
into the water by wind
and rain and which will be killed quickest,
thus in a day or two. Others
might last a couple of
weeks, but will be dead in due time. Even though some algae
die rather fast, it might take upto 6 weeks before the effects are
visible with the bare eye.TOP
3. Which
algae are the most difficult to kill ?
This depends on the
application, in other words, the type of water body the LG Sonic is
being used. For swimming pools for example, the
toughest ones are the black algae which mostly grow in the joints
of the
tiles.
But they surely will be killed in due time. Another hard type
is a type of filamentous algae also.
Some patience is
definitely
required here,
as they klit together like a curtain which hinders the ultrasonic
vibrations from penetrating the water properly. But they will
be killed, after which the algae can be removed easily from the
water.
This has to be done regularly until all algae are killed and the water
is cleared.
TOP
4. After
having the ultrasonic device a couple of weeks in operation it looks
as if there are more
algae then before. What happened ?
Of course this
is not the case, it only Looks that way! There
are two reasons why it appears like that:
a. Sometimes
(roaming) algae do not sink to the bottom
after being killed,
but form a tiny methane (gas) bubble, which makes
them drift to the surface,
giving the impression as if they have
multiplied themselves. If one pushes the dead algae aside one
can see the clear water underneath. After a rain
shower the bubbles will have broken and the dead algae will
sink to the bottom. If one has a problem waiting for this to
happen, the algae should be scooped off.
b. Dead
filamentous algae are loosened from bottom and sides and they fall
apart, thus
causing the volume to look bigger. Dead filamentous algae ALWAYS
have to be taken out because they block the water surface and absorb
the sound like a blanket.
TOP
5.
Should I have the device continuously
operating ?
This
is surely recommendable, the cost of electric power is
very little; the strongest device currently in the market
(LG Sonic XXL) uses 25 Watt, the smallest
(LG Sonic SSS) 20 Watt.
By
having the ultrasonic vibrations permanently operating in your water
volumes they prevent new algae to cause a bloom.
TOP
6. Can
I lengthen
the transducer cable ?
Preferably not! It is
always best to either lengthen the electricity cable or bring the
electricity source closer to the water body. When both options are
impossible, it can be done, but ONLY
with a cable made to the needed measurement, which you can order
from your LG Sound dealer.
This cable will have the right connecting plugs fitting to the
electronics box and the transducer cable. Be
aware: this connection is only drip waterproof, under no
circumstances can it
be used under water!
Also
a mounted cable to the required length can be supplied on ordering
the device. Lengthening the cable will
cause some loss of
strength of the signal.TOP
7. Can
I shorten the transducer cable ?
Yes, no problem. Better
if the cable has to be shorter to cut it to the required length
and
fit the original plug again, then roll it, as from this induction
might influence thestrength of the signal. TOP
8.
Where
should the transducer best be placed ?
There
where the 180 degrees beamed waves from the front of the transducer
cover
as
much of the water mass as possible, about 20 cm. under the surface
and not
less
than 20 cm from the bottom. This means that usually the best
position is in a corner facing out. The
two strongest
models, the LG
Sonic XXL
and the LG Sonic XL,
are
equipped with a special designed float, which keeps the transducer
permanently on the
right depth underwater.
TOP
9. How
do I know if the transducer is working?
When
the red control light on the electronic
box is blinking (4 seconds on, 1 second
off),
it means that the ultrasonic sound is produced. To check
whether the transducer is working,
you can hear an interrupted high tone when putting the front of the
transducer to your forehead (do not be afraid,
it guaranteed will not harm you).
If
the transducer was already for some time in the water and there is
in the middle of the front a clean round spot, it means that any
growth of algae or other micro
organisms can not settle on that part of the
transducer, showing it is working all right, killing and
loosening all unwanted growth.
TOP
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