Origins.
Any sun-drenched vessel containing water (other than unopened
de-ionized water) or canned water will probably grow green algae in one form or another
– either green water, stringy algae, or sheet algae -- or a combination.
The spores float in the air on breezy days and wind up in the water
where they grow -- fast -- and turn your water green..
LA
Pic
Moving water in full sun grows algae fast. Visibility? About a
half inch.
Bad Traits. Algae keeps
us from seeing our fishes in ponds and even in indoor aquaria.
Our rich Iowa waters really encourage all forms of algael growth.
Most farm ponds and golf course ponds turn either green or brown
(diatoms) from algael growth.
Love that Algae. Green
water (and other algae) saves your fishes’ lives by eating ammonia,
nitrites, nitrates, phosphates, and carbon dioxide – that could
otherwise kill your fishes. In
ponds algae
also eat the nasty substances coming from the rotting food and dead nightcrawlers on the bottom.
Algae as a Food. Health
food stores sell many algael foods – spirulina
and chlorella come to mind (and
don’t forget Soylent Green -- popular in the 80s). Algae
make an even better food for the organisms our fishes love – rotifers,
daphnia, gammarus, cyclops, and clacoderms to name a few.
Plus, the bivalve filter feeders (like mussels) love single cell
algae (green water).
More Good Traits. Baby
fishes eat algae in their first days of life.
Euglena makes a great
first food – especially for the labyrinth fishes.
Algae also helps babies hide from their larger (hungry) pond mates
and tank mates. Hungry larger fish can’t see baby fishes in the pea
green soup of miniscule food organisms.
pH Changers. Green water
can radically alter your pond’s pH levels.
Morning readings of 6 pH can jump to 9 or even 10 on a sunny
afternoon. Your algae suck in CO2 during the day and exhale it at night – swinging your pH
like a green Yoyo. Don’t fool with
your pH yourself. Let the
little green guys take care of it. They’ve been doing it lots
longer than you. And they know how to do it right.
Brown Water. Most brown
water comes from too many leaves on the bottom.
Dead leaves give off tannic and humic acids (free) that would cost
you a bundle to buy from TetraWerkes in Germany
(Black Water Tonic).

The Other Brown Water. Like
dead leaves, diatoms also turn your water brown or reddish brown.
These reddish-brown algae incorporate silica into their cell walls.
Some stick to your plant leaves and make them feel gritty as well
as look ugly. They’re more
of a problem in aquaria, because you don’t notice them so much in ponds.
Lime Walls. Lots of
algae incorporate carbonates into their cell walls.
Some countries (white cliffs of Dover come
to mind) rest on these dead algae walls. We
Iowans live atop a 50 to 100 foot layer of these algae deposits.
That’s one reason our water stays hard and always maintains a pH
about 7.5. Don’t use a water
softener to take out the lime. Your
softener adds sodium to the water. Sodium
kills most plants. By the way,
most water changes will give your algae a growth spurt.
They really like the extra carbonates.
Suggestions. Whether you
love green water or abhor it, realize that it usually grows explosively,
eats up all the food, and then dies back to a reasonable level.
If you learn to live with it, it will normally recede on its own.
Much like Tribbles, the harder you try to get rid of green water,
the faster it grows. Want to
kill it for sure? Try
culturing it in a separate container.
LA
Pic
Last
Word. In the last couple years, a product called Algae Fix came
on the market . Algae Fix works 95% of the time. All the other algae killers also kill anything green.
Keep your lawn leprechauns away from them. Leprechauns can drink Algae
fix safely.
LA.
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© 2005
LA Productions

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