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Pet Forum / Aquaria / General / February 2004



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blue green algae

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Scott - 24 Feb 2004 10:57 GMT
theres a patch of blue green algae in my tank at the moment that's slowly
starting to spread over everything, and I read somewhere on the web that it
can be gotten rid of by using a half dose of a anti bacterial fish medicine
that contains erythromycin. can anyone tell me which fish medicines contain
erythromycin. cheers
Iain Miller - 24 Feb 2004 11:03 GMT
> theres a patch of blue green algae in my tank at the moment that's slowly
> starting to spread over everything, and I read somewhere on the web that it
> can be gotten rid of by using a half dose of a anti bacterial fish medicine
> that contains erythromycin. can anyone tell me which fish medicines contain
> erythromycin. cheers

None in the UK as far as I know. I've got the same problem at the moment -
I've just ordered an Interpet treatment for it from here...

http://www.aquatics-online.co.uk/acatalog/Online_Catalogue_Interpet_Water_Treatm
ents_15.html


Scroll down to the bottom of the page.

It should be here today so I'll come back & let you know if it works!

Otherwise I did hear that a cause of it can be old light bulbs (which would
fit here too!) so I have a new tube coming as well. Its fairly easy to
syphon out & the last time I had it I just kept doing that & eventually it
just went away.

rgds

I.
Roger Sleet - 25 Feb 2004 11:18 GMT
> I've just ordered an Interpet treatment for it from here...
>
[quoted text clipped - 4 lines]
>
> It should be here today so I'll come back & let you know if it works!

I can let you know in advance - it doesn't, it is completely and utterly
useless.

Roger Sleet
Roger's Aquatic Pages http://www.sleet.plus.com
steve@tropheus.demon.co.uk - 24 Feb 2004 11:36 GMT
>theres a patch of blue green algae in my tank at the moment that's slowly
>starting to spread over everything, and I read somewhere on the web that it
>can be gotten rid of by using a half dose of a anti bacterial fish medicine
>that contains erythromycin. can anyone tell me which fish medicines contain
>erythromycin. cheers

Erythromycin is an antibiotic and only available by prescription in
the UK. So you need a friendly vet, doctor, dentist or pharmacist who
will break the rules.

Alternatively cut feeding to zero for four days. Remove as much of the
algae as possible every day.

Steve
Velvet - 24 Feb 2004 14:39 GMT
>>theres a patch of blue green algae in my tank at the moment that's slowly
>>starting to spread over everything, and I read somewhere on the web that it
[quoted text clipped - 10 lines]
>
> Steve

I got rid of mine by keeping the tank blacked out for 3 days, having
removed as much as I could, and really ramping up the filtration - it
seems to prefer the low-flow areas - the aeration, and the CO2/planting.

Course, the plants weren't all that chuffed about the darkness, but they
got going faster than the BGA the other side of the blackout.  I fed the
fish but only a little during the blackout.

It needed a couple of goes of this, I'd give it about a week, and if the
BGA was coming back, it'd go into darkness again.

I now have plants growing like crazy in there, lots of big healthy fish,
don't do water changes all that often, and no BGA whatsoever.  Oh, and
the lights are old (over a year) and the surface is prone to covering
with duckweed (damn stuff), so it's not necessarily light level dependent.

Velvet
Roger Sleet - 25 Feb 2004 11:18 GMT
> theres a patch of blue green algae in my tank at the moment that's
> slowly
[quoted text clipped - 5 lines]
> contain
> erythromycin. cheers

You can't get erythromycin in the UK with out a prescription, which you
won't get for BG algae.

The main cause is high levels of Nitrate, Phosphate and/or organics in the
water.  Test your tap water for Nitrates and phosphates.  If they are low
then lots of water changes will get rid of them.  If they are high then
get appropriate chemical filters.

Roger Sleet
Roger's Aquatic Pages http://www.sleet.plus.com
Scott - 28 Feb 2004 14:33 GMT
I've been gravel vacuuming the patch of algae for the last few days, and
it's been working, what isn't killed on the first go is by the next
vacuuming, and all the loose stuff seems to die rather than regrowing were
it settles. cheers

> > theres a patch of blue green algae in my tank at the moment that's
> > slowly
[quoted text clipped - 16 lines]
> Roger Sleet
> Roger's Aquatic Pages http://www.sleet.plus.com
 
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