Hi there Stephen & Koi-Lo,
Thanks so much for your enlightening feedback. I did forget to mention that
I have some koi in my pond which have grown quite a bit ......about 7 to 8
inches now from about 3 to 4 inches 2 months ago. They are thriving quite
well right ? Can it be that the substantial presence of the algae has
contributed to the favourable growth rate ?
A couple of doubts still not cleared however...... should I just leave the
fuzzy algae alone doing its appearing & disappearing job or should I
continue netting it out every afternoon? It's really frustrating as it just
can never end , day in & day out ! Another thing is about the submersible
pump, do you think it is undersized for sufficient circulation? Remember I
said that the water is crystal clear and only the walls & floor are
blanketed by about half inch of algae.
Cheers & thanks again.
Danny
"Köi-Lö" $##$$@$##$$.#$$ wrote in message
...
"DK" wrote in message
...
Hi all,
Have a problem now & hope to get some useful feedback and expert advice
from
you guys out
there.
I have a two-month old concrete pond of approx 1500 gallons volume
complete
with a 0.5 hp submersible pump, external filter, a biological filter & a
waterfall. To curb an initial pea soup problem, I have added an 18W UV
sterilizer run by a separately dedicated small pump and the water is now
crystal clear except that the walls & floor are carpeted with green &
browbn
algae. However, I believe that the system has sort of settled as these
days
I only have to monitor & change the filters as and when necessary.
That's great. The algae on the sides and bottom is normal.
I live in a tropical country and have no trees or shade overhanging the
pond, thus exposing it to about 6 to 8 hours of strong sunlight on an
average day. I have added quite a bit of aquatic plants and shrubs in &
around the pond and hopefully this could help improve the balance.
One problem that I face now is the emergence of numerous free-floating
clumps of green algae every afternoon (after strong sunlight) which I
would
scoop out manually using a net on a long pole. It is very irritating but
strangely, if left alone these clumps of algae seem to disappear by
nightfall. Beats me. What are these actually ?
My 800g pond has the same problem. I've given up netting it out. Most goes
through the net anyway. It's a type of algae.
Are they called algae scum
(read it somewhere) and how do they come about ?
They're fed by nutrients in the water. I added more plants as competition
but that didn't help in my pond. Water hyacinth and lettuce may help but
then I have to constantly net out the excess. A real pain in netted
ponds.
Are there anyone out there
who have experienced the same predicament & how did you deal with it ?
The
filter of the UV filter gets clogged up very quickly too. Wonder if the
reason could be the size of the pump or something else.
I enclose the water pumps in those black screen plastic pond plant baskets
wired together. They don't clog for weeks. My Tetra UV lights don't have
a
filter attached. Water changes don't help in my pond, they just make the
problem worse. I've learned to live with it.
Appreciate any feedback.
Thanks & regards,
Danny
--
KL....
Frugal ponding since 1995.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
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