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<< ARTICLES :: TANK MAINTENANCE
I
thought it would of interest to talk you through a provisional maintenance
routine that is performed on a monthly basis in a City office. All
of the routines should be applied to a domestic routine as well
as extra applications that would not be practical in an office environment.
I will also advise what you should undertake daily, weekly, monthly,
three monthly and annually. A professional maintenance regime keeps
the tank in pristine condition with clean glass, crystal clear water,
healthy plants and fish.
It is vital to have the correct equipment and a user-friendly tank
which is easy to maintain is a priority. The filter should be able
to run for at least two months without any reduction in its efficiency.
The Juwel tank fits this criteria perfectly as they have a very
efficient internal filter with a slow turnover. The heater is contained
in the filter and disperses warm water throughout the tank. The
tanks are finished in plastic which does not deteriorate as fast
as chipboard and you can gain clear access to the tank by removing
the light unit. Anyone who has had a Seabray tank will know how
difficult it is to keep up a good maintenance regime. Unless you
are double-jointed - forget it ! So full marks to the continental
style tank which has been designed with the aquarists needs at heart
and not the retailer. The systemised tank comes complete with all
the necessary equipment and is very good value. Although there are
no extra expenses for heating and lighting etc. it does have the
disadvantage of some complicated wiring. Internal filters and heaters
are essential when tanks are situated in offices. For safety and
commonsense reasons, external power filters should be avoided. This
may seem cantankerous but has come about from bitter experience.
Tanks, hoses, couplings etc can come adrift and the seals can be
fiddly to fit and the risk of flooding is always there although
the more modern designs have improved this problem.
The next golden rule is to lightly stock the tank. The filters
will last longer and algae problems will be reduced and your maintenance
regime is reduce. If you overstock the tank, nitrates build up quicker
and algae grows faster. So always set the stocking level at half
the recommended rate.
The use of good quality water is essential. For our soft water
set up we use RO water buffered with 20% London hard tap water.
For our hard water set up the water has been treated to remove nitrates
and phosphates - the prime causes of algae. The water to be used
is run through an appropriate resin to remove approx. 90% of nitrates
and phosphates.
Having done the fundamentals let us look at the maintenance regime
:
The first thing to do is to switch the electricity off ! Don't
be tempted to try short cuts. Place dust sheets around the tank
to mop up any spills - this goes for both office and domestic environments.
Carefully remove flaps and place on the dust sheet or towel and
then remove light unit and carefully place by the side of the tank
so you have complete access to work without hindrance. Have two
20 litre containers - one for replacing the water and one for removing
the water. Draw the water off through the internal filter having
first removed the sponges. This removes excess detritus and collected
in the filter which would be flushed back into the tank when the
sponges are replaced and by siphoning through the filter you reduce
disturbance and avoid sucking up both plants and unsuspecting fish.
It is a good idea to mark the 20 litre level if using a larger container
so the water you take out is matched by the water you replace.
The next step is what I call 'gardening'. I remove all the floating
plants which are the key to success in a planted aquaria. They reduce
stress in the fish, they leech out excessive nitrates and phosphates,
cut out excessive light and act as biological filters. They are
also a wonderful safety net in the event of power cuts. My professional
tanks have a good covering of Amazon frogbit, Phyllanthus Fluitans
and the floating grasses. They are attractive and are a good indicator
of the overall health of the tank. If they are yellow and spindly
and covered with algae, this is a sign of poor water quality. They
should normally be lush green and free from algae. Conversely, an
over abundance of growth is also a sign of problems. Check to see
if there has been a power cut or whether the lights have been permanently
on. Either can cause rapid plant growth and ammonia build up causes
rapid plant growth. Observation and experience can enable you to
avoid trouble in the tank.
In
an ideal world I would remove 100% of the floating plants but this
is very time consuming. Out of the plants I remove, I select about
25% to return to the tank - thereby reducing the cover by 75%. Plants
are then trimmed to remove any dead leaves and excess roots. This
makes more light available to stimulate the plants beneath and the
plants which have been removed will have taken out a lot of other
nutrients, such as nitrous phosphate which can build up in the tank.
Then remove dead and dying leaves. You can be quite brutal because
the plants grow vigorously, especially where you have C02 injection
systems. Any weedy plants can be removed as other more vigorous
plants will take their place. Sword plants that have grown too big
are also removed as they restrict light and remove excessive amount
of nutrients. You can either trim back the outer leaves or, if there
are baby plantlets, they can be planted in its stead as they will
soon grow as vigorously as the old plants.
The treatment of stem plants is different to those of rosettes.
I call these 'cut and come again'. They include Hygrophila, Ludwigia
and Stargrass. You can cut to as much as 2" and the cuttings
can be planted to make additional plants. While using your fingers
for stem plants, it should be avoided when working with rosette
plants where the whole leaf has to be removed. You should use surgical
scissors so as not to damage the crown which can rot.
This is especially true with Vallis which can rot right back and
damage the whole plant and any wounds on plant encourage hair algae
which look unsightly. I have invested in Aquatic Landscapes Gardening
Kit which has spatula, tweezers and surgical scissors - see my tool
list for maintenance.
When the gardening is complete, you can remove the detritus from
the dead spots in the tank. I have not yet found anything to beat
the old fashioned airlift hoover which eliminates detritus on the
ground. Although most of the hoovers have been designed for gravel
cleaning and sludge removal the function is not essential in a planted
aquaria and can actually be detrimental.
The next step is the clean the glass. You may have to do this when
the lights are on and again when they are off as you will always
miss some algae which can be difficult to see through the glass.
I have tried all manner of scrapers and have even adapted a Halford's
ice scraper to good effect. I also use the green scouring pads but
they can scratch the glass. Avoid algae magnets as sometimes pieces
of gravel can get caught and can scratch the glass. The best tool
by far is the Kent Marine Pro Scraper. It is a beautifully engineered
piece of equipment with either a plastic or metal blade. They are
pricey but are very efficient at dealing with stubborn ingrown algae
with ease and quickly. In my kit I have a hand held one and a 23"
handled blade to tackle the hard to reach areas at the back. Even
though you cannot always see the algae, you can feel it as it is
rough to the touch and with experience you can even hear it as you
scrape, the sound changes where the algae is on the glass. To clean
the limescale at the top of the tank, you can either use the Pro
Scraper or in some cases I use a lemon as the acid neutralises the
limescale fairly quickly.
The next step is to check the sponges. Normally, they only need
cleaning every two or three months, depending on the stocking levels.
They are simply replaced and the water is then replaced and returned
to the tank. This is done through the filter box to avoid disturbance.
Once the water has been replaced, the electricity is turned off,
the filter can run and clear the water that has been disturbed.
This enables the tank to be settled down.
Should the sponges require to be cleaned, it is important to clean
them in tank water to avoid damage to the bacteria. Don't waste
the gungy water as this can be used for plant fertiliser, either
in the house or garden, or can be dried to make a bacteria starter
culture for future use. At the same time as the filters are cleaned
and unclogged you should strip down the filter motor so it runs
quietly and efficiently. This involves taking out the spindle and
cleaning with the filter brushes, often supplied with the filter,
otherwise the Fluval set works well.
The
next important thing to check is the water. I use the 5 in 1 strip
tests supplied by Esher as they are cheap and easy to use and give
a good indication if there are any problems. They test for general
and carbonate hardness and, importantly, nitrite and nitrate. I
am to keep nitrate between 0 and 20 parts. I cannot over-emphasise
the importance of regular testing of the water to give advance notice
of any problems. It is a good idea to log the readings so you can
see any trends, ph swings or nitrate build up. For those computer
addicts a graph can be worked into an Excel spreadsheet. I have
a nifty little programme for my Palm called 'Aquatank' that records
my maintenance routine and is available as a free download on the
Internet and well worth searching out. It is also good to note what
maintenance routine you have completed and you can observe the results.
When the light is replaced on the top of the tank, you can check
the areas of the glass you have missed which may need another scrape.
Then observe the fish to ensure they are showing no signs of disease.
The glass can then be given the once over with a soft cloth and
the equipment can be checked to see if it is okay and the timer
checked.
The professional routine is then complete.
However, at home the aquarist needs to do more.
Daily you should check the equipment is working properly, the heater
light is on and the flow from the filter and the temperature of
the water. With experience you can notice any problems by activity
or lack of activity of the fish and by the feel of the water temperature.
It is possible to change more water at home and 10% a week should
be aimed for.
You should service the filters every two to three months. The routine
is the same as for the office.
Although I did not mention it in my office maintenance regime,
you should clean the reflectors (or cover glass for older tanks)
on a monthly basis as light is quickly reduced by the collection
of algae on the surface of the glass. Also it is a good idea to
note the date when you replace the fluorescent tubes as they reduce
inefficiency over a period of time and this is not noticed and they
should be replaced every 12 months.
A planted tank rarely needs stripping down unless it is to be moved
or something goes dramatically wrong. However, every 12 months it
is a good idea to change some of the larger plants which are tired
for some smaller healthier plants. It is also very important to
feed your plants. I use a good general fertiliser on a weekly basis
- either API 'S Leafshine or Tropica's Mastergrow. Once a month
in work in handful's of laterite to the gross feeders - Echinodorus,
Crypts. Etc. This technique works wonders.
If you have C02 injection remember to check the bubble counter
and note when the C02 cylinder was last replaced - it is always
good practice to have a spare to hand.
For a more sophisticated fertilization regime, you can use Dennerle
7, 15 an d30 day system with different nutrients being added but
I find the general fertilizers work just as well and, together with
regular water changes, your plants will thrive.
You must have essential maintenance equipment and most aquarists
should have most of the following :
1. A clear white plastic bucket - ideal for seeing fish sucked
through.
2. Clear transparent hosepipes from ½" to 1 ½"
in two metres lengths
3. Scraper for glass cleaning - Kent Pro is ideal
4. A good gardening kit - spatula, tweezers and scissors
5. A dibber - or planting pencils work brilliantly.
6. Brushes for cleaning the motors of the filter
7. Teatowels, dust sheets and cloths to polish the glass - M &
S have a deluxe cloth for cleaning glass and is ideal.
8. A notebook for keeping a log.
9. Spare equipment - heater, light tubes, filter etc.
10. A collection of nets - small to large, for catching fish and
easy removal of floating plants.
11. A dustpan with holes drilled in for removing the substrate -
or soon to be on the market from Azoo Products is a gravel scoop
which is ideal.
12. Test strips as these are vital for any regular maintenance regime.
The above maintenance routine has been developed over many years
and gradually improved. I hope you find it useful and if you follow
it you should have a trouble free aquarium and you should find fishkeeping
and planted tanks a doddle.
PETER BRADLEY
12TH MAY 2002
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