equipment

[Fred Hapgood]

I'm thinking about getting a 125 gallon tank and am wondering what
sort of filter to get for it. The biological load is pretty minimal
-- two GF and a koi, each about 7"-8" -- but I like to keep the water
clean. The simplest option is probably two large Whispers, but I
curious about my alternatives. Quiet operation is a priority.

Fred
http://www.pobox.com/~hapgood

[Geezer From The Freezer]

Fred Hapgood wrote:
>
> I'm thinking about getting a 125 gallon tank and am wondering what
> sort of filter to get for it. The biological load is pretty minimal
> -- two GF and a koi, each about 7"-8" -- but I like to keep the water
> clean. The simplest option is probably two large Whispers, but I
> curious about my alternatives. Quiet operation is a priority.
>
> Fred
> http://www.pobox.com/~hapgood

Over filter for definite. You'll want at least 2 strong filters.
Koi should really be in a pond, but you'll probably get away with
1 koi and 2 gf as long as you keep the levels at that and assuming
the tank is long, rather than tall.

[Fred Hapgood]

On Tue, 04 May 2004 11:25:13 +0100, Geezer From The Freezer >
wrote:

>
>
>Fred Hapgood wrote:
>>
>> I'm thinking about getting a 125 gallon tank and am wondering what
>> sort of filter to get for it. The biological load is pretty minimal
>> -- two GF and a koi, each about 7"-8" -- but I like to keep the water
>> clean. The simplest option is probably two large Whispers, but I
>> curious about my alternatives. Quiet operation is a priority.
>>
>> Fred
>> http://www.pobox.com/~hapgood
>
>Over filter for definite. You'll want at least 2 strong filters.
>Koi should really be in a pond, but you'll probably get away with
>1 koi and 2 gf as long as you keep the levels at that and assuming
>the tank is long, rather than tall.

What does 'over filter for definite' mean? Do you mean, make sure
to have more filter capacity than the manufacturer claims is necessary?
If so, how much more?

http://www.pobox.com/~hapgood

[Geezer From The Freezer]

Fred Hapgood wrote:
>
> What does 'over filter for definite' mean? Do you mean, make sure
> to have more filter capacity than the manufacturer claims is necessary?
> If so, how much more?

Manufacturers almost always give reference to tropical fish rather than
goldfish.
As goldfish are much more dirtier, you need more turn over in your filter.
With a koi in your tank, I'd say at least 10x your water capacity an hour,
but thats my judgement rather than fact, you might want more turn over.

Definite means "for sure"

[Fred Hapgood]

On Wed, 05 May 2004 10:09:36 +0100, Geezer From The Freezer >
wrote:

>
>
>Manufacturers almost always give reference to tropical fish rather than
>goldfish. As goldfish are much more dirtier, you need more turn over in your filter.
>With a koi in your tank, I'd say at least 10x your water capacity an hour,
>but thats my judgement rather than fact, you might want more turn over.

You're seriously suggesting machinery capable of handling a flow rate of
1200 g/h???? I would think a current as strong as that would be a problem
for the fish.
http://www.pobox.com/~hapgood

[Geezer From The Freezer]

Fred Hapgood wrote:
> You're seriously suggesting machinery capable of handling a flow rate of
> 1200 g/h???? I would think a current as strong as that would be a problem
> for the fish.
> http://www.pobox.com/~hapgood

I sure am. Add a spray bar to spread the flow. I know of people with a 20xhour
turnover who've
had no problems.
You can always add some terracotta pots to allow your fish quiet areas if you
are worried.
Remember, you do have a Koi in your tank - these fish require minimum of 100
gallons each!
and can grow over a foot and a half