RE: HOT Magnum filter... green water

["Mark Pearlscott" <mark@pearlscott.com>]

Well stated Dave.  I think you hit the issue on the head.  It is all due
to balance of nutrients.  In the case of your tank where you were
growing green water on purpose, you didn't have anything to consume the
nutrients except the green of the green water (unicellular algae).  Once
the snails brought in bacteria, they could use some of the nutrients,
and voila... no more green water.

Usually (GSAS) people have plants in the tank, and so it is more an
adjustment of nutrient levels, rather than making sure other organisms
(bacteria, etc.) are present in sufficient numbers to take care of the
nutrients that are available.

So Elaine, you could try what Dave did and add snails or possibly more
fish, etc. to try and push the balance of nutrients and nutrient
consumers to a more favorable direction.  Just a thought.

Dave, if you really want to get green water going again in that tank
with snails, I have some "triple-phosphate" that I bet would get it
going.  Excess phosphate is one of the leading causes of algae in tanks
(especially green water).

Mark


> -----Original Message-----
> From: owner-gsas-member@thekrib.com
[mailto:owner-gsas-member@thekrib.com]
> On Behalf Of Walburger, David
> Sent: Friday, July 02, 2004 10:13 AM
> To: gsas-member@thekrib.com
> Subject: RE: HOT Magnum filter
> 
> Elaine,
> 
> It seems that most greenwater problems happen with new tanks and that
they
> seem to go away on their own with proper care.
> 
> In my opinion, these green water problems occur due to unbalanced
> microbial
> populations in new tanks rather than unbalanced nutrient levels.  Over
> time
> microbes which compete with, or eat algae, will "balance" most tanks
out.
> 
> In fact, I've had a situation recently where an established tank that
I've
> grown greenwater for months in on purpose, stopped producing
greenwater
> after the addition of some snails to take care of some surface algae
on
> the
> glass.  I've been unable to grow algae in it regardless of the amount
of
> nutrients and light I've added.
> 
> Dave Walburger
> 
> -----Original Message-----
> From: Kritter714@aol.com [mailto:Kritter714@aol.com]
> Sent: Friday, July 02, 2004 8:41 AM
> To: gsas-member@thekrib.com
> Subject: Re: HOT Magnum filter
> 
> In a message dated 6/30/2004 7:42:59 AM Pacific Standard Time,
> mark@pearlscott.com writes:
> If you are fighting green-water, then most likely you have a nutrient
> imbalance (if you are growing plants).  Usually green water appears in
> Nitrate limited tanks, and so Nitrates are actually ADDED to remove
the
> green-water.  It seems counter-intuitive unless you think about how
all
> the macro-nutrients interact with the growth cycle of plants.
> 
> Mark
>  no plant in this  tank history of this tank is I had it in storage
for a
> couple years because of a move and I was trying to sell it no sale got
> tired
> of
> storing it so I set it up in my spare bedroom ( which fyi has very
little
> sunlight exposure) cycled it and put a couple paradise fish in it that
> were
> inteneded for my pond this spring. water turned green and I couldn't
get
> it
> to stay
> cleared  when I got some new fish and tanks at the auction I ook it
down
> got
> rid of the gravel  and left the tank sit then  re-set the tank up in a
> diferffent spot with different filter sand and fish  water clear for
three
> days then
> green has stayed that way since  at least the end of april if not
longer I
> have tried to change water,the  diatom filter, the algea detstroyer
> treatment ,
> and phosporus remover to no avail.
>   but in the last 2 days  the water has begun to clear with no change
> except
> 
> I tried to set up the other diatom filter must have scared it LOL.
this is
> the
> first time in  a lot of years of fish keeping  I have had green water
I
> hope
> its over.
>   Elaine
> 
> 
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