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Re: new pond advice please!

Subject: Re: new pond advice please!
by Otter on 4/6/2010 9:33:18


avons82 wrote:
From advice I got on here I'm transferring my large indoor goldfish into an outdoor pond.

Do I need to treat the water as I would an indoor tank, ie chlorine balance etc.


Its just a 175gal pond for 3 fish. Do I need a filter?

Yes. One rule of thumb for goldfish ponds is 30-50 gallons per adult fish. Though you're slightly above this minimum, you still need a pump and filter.

Does the water need to sit in the pond a certain time before I can introduce the fish?

Ideally, you'd let the pond get through the nitrogen cycle with bottled ammonia and/or rotting fish food before introducing the fish. However, if you're going to transfer the filter media from their tank along with the fish, you could consider the pond more or less cycled.

And can anyone give me any advice on maintaining the pond? Water changes etc?

Do not add gravel, the effect of the muck it will trap will dwarf any biological filtration the gravel provides.

Remove debris from your pond and filter regularly.

Instead of guessing about when to change water, get a test kit. The liquid tests are much more reliable than the strips.

Marginal plants (the ones that stick up out of the water) have the advantage of not causing pH swings at night.

Much of what you've learned from keeping fish indoors applies to ponds, but there are some differences. More sunlight means algae can be much more difficult to control. Your filter will have to cope not only with the load of the fish, but also with debris from trees and other plants. At times, there will be enough pollen to noticeably effect water quality. In the summer, heat may be a problem. Be sure you have enough aeration to keep the oxygen levels up. Herons are much better at fishing than any domestic cat could hope to be. Your fish will share their pond with wildlife. Some will be good to eat. Others, for instance, frogs, may compete for the attention of the fishkeeper.