Common Goldfish Growout Tank Size?

How large of a tank would be needed to grow a common goldfish to about 6 inches? Would a 29 gallon with 2 fancy goldfish be ok if I have a lot of filtration? I can do daily water changes if it would be needed. The goldfish will be going into my ~1000 gallon pond.

 

I would think so, I grew 4 or 5 regular commons to about 4" in a 20 high before I realized how big they actually got.
That only took a few months too, maybe 4 max

 

How large of a tank would be needed to grow a common goldfish to about 6 inches? Would a 29 gallon with 2 fancy goldfish be ok if I have a lot of filtration? I can do daily water changes if it would be needed. The goldfish will be going into my ~1000 gallon pond.

Hello Gou...

If you're growing out a goldfish or two or even more, just figure on roughly 15-20 gallons for the first fish and five gallons for each one after that. I currently have 19 growing out in a 75 G and they've been in the tank several months. They still have plenty of room. Ponds are great. I have a 300 gallon watering trough outdoors where I keep Goldfish and Rosy Red Minnows. These fish like the colder water.

I would change out half the water weekly. Goldfish are heavy waste producers.

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So how many could be in the tank with the fancy goldfish? The 2 fancies are living there permanently (unless I upgrade the tank).

 

So how many could be in the tank with the fancy goldfish? The 2 fancies are living there permanently (unless I upgrade the tank).

Gou...

If the Goldfish are roughly fry-sized, you could add six. If they're only going to be in the tank until late spring, they won't outgrow it. Fancies are slow swimmers, so you'll want to be careful the fry don't outswI'm your fancies during feeding time. I keep Fancies separate from the rest like Comets and common Goldfish. If you don't separate them, the Fancies don't get their share of the food.

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Gou...

If the Goldfish are roughly fry-sized, you could add six. If they're only going to be in the tank until late spring, they won't outgrow it. Fancies are slow swimmers, so you'll want to be careful the fry don't outswI'm your fancies during feeding time. I keep Fancies separate from the rest like Comets and common Goldfish. If you don't separate them, the Fancies don't get their share of the food.

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If the common goldfish don't let the fancy goldfish eat could I just keep them in a breeder net while I feed the fancy goldfish? I'll feed some to all of them first then if the fancy goldfish don't have enough food I can separate them. I don't have the tank set up yet so the commons will probably be bought around fall so I can keep them inside for the winter. They are around 1-2 inches.

 

Interesting solution but I imagine it would work if you can actually catch them all

 

If the common goldfish don't let the fancy goldfish eat could I just keep them in a breeder net while I feed the fancy goldfish? I'll feed some to all of them first then if the fancy goldfish don't have enough food I can separate them

Gou...

You don't have to make feeding time complicated. Just get the fry acclimated. I'm assuming you understand the drip process of getting new fish used to the new tank water. Once the new fish are in, just observe them at feeding time. If you need to add a little more food, so the Fancies get their share, then do it. Just make sure you remove and replace half or more of the tank water every week, no excuses. Goldfish are much heavier waste producers than the tropical kind.

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Gou...

You don't have to make feeding time complicated. Just get the fry acclimated. I'm assuming you understand the drip process of getting new fish used to the new tank water. Once the new fish are in, just observe them at feeding time. If you need to add a little more food, so the Fancies get their share, then do it. Just make sure you remove and replace half or more of the tank water every week, no excuses. Goldfish are much heavier waste producers than the tropical kind.

Old

Would daily water changes benefit them? I hate sand looking dirty so I usually vacuum it every day or every few days depending on the tank. My water change schedule is usually 30% water changes at least once a week, 50% once a week, and sometimes small water changes (10-20%) when the substrate looks dirty. I skip water changes on days I add fertilizer for my plants twice a week. Should I drip acclimate or just add water to the bag?

 

Would daily water changes benefit them? I hate sand looking dirty so I usually vacuum it every day or every few days depending on the tank. My water change schedule is usually 30% water changes at least once a week, 50% once a week, and sometimes small water changes (10-20%) when the substrate looks dirty. I skip water changes on days I add fertilizer for my plants twice a week. Should I drip acclimate or just add water to the bag?

G...

You don't need to perform a water change more than once a week. It takes time for waste material to dissolve and foul the water. A 50 percent change is enough to keep the water livable for your fish. Changing the water more often, won't make a world of difference, it's just more work. Unless, you keep plants that need very strong light, you don't need to add fertilizer. The kind the fish produce is enough. When I add new fish to a tank, I float their bag in the water for roughly 30 minutes and every few minutes, I add a little water from the tank. After the 30 minutes, I lower the bag into the tank and let the fish swim out. If I get some water from the bag into my tank, I don't fret over it. It's extremely unlikely a healthy fish in pure water conditions is going to be infected.

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G...

You don't need to perform a water change more than once a week. It takes time for waste material to dissolve and foul the water. A 50 percent change is enough to keep the water livable for your fish. Changing the water more often, won't make a world of difference, it's just more work. Unless, you keep plants that need very strong light, you don't need to add fertilizer. The kind the fish produce is enough. When I add new fish to a tank, I float their bag in the water for roughly 30 minutes and every few minutes, I add a little water from the tank. After the 30 minutes, I lower the bag into the tank and let the fish swim out. If I get some water from the bag into my tank, I don't fret over it. It's extremely unlikely a healthy fish in pure water conditions is going to be infected.

Old

I do the water changes because I don't like the tank to look dirty. My plants usually die/stop growing if I don't use fertilizer when nitrate runs out. I'll just replace water from the bag instead of dripping

 

I do the water changes because I don't like the tank to look dirty. My plants usually die/stop growing if I don't use fertilizer when nitrate runs out. I'll just replace water from the bag instead of dripping

G...

Water changes remove whatever has dissolved in it. By removing that much water, that often, you remove the dissolved nitrogen the plants use. The organic material that forms on the bottom dissolves and nourishes the plants. But, do whatever you feel is working.

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G...

Water changes remove whatever has dissolved in it. By removing that much water, that often, you remove the dissolved nitrogen the plants use. The organic material that forms on the bottom dissolves and nourishes the plants. But, do whatever you feel is working.

Old

The fertilizer adds nitrate. My tap water has 5 ppm nitrate so it doesn't matter too much.