Overstocked??

[windgirl]

I have 6 cories in a 10G ... sigh 3 peppered cories were a gift. I had 3 albinos. The tank mates are guppies (5 adults and 2 fry to be exact).

Do I have no many cories ... the bottom space they have is about 14.5"x12". Its a 10G but its divided (a small space for a betta). The tank is heated has 2 plastic plants, and a 1/2 clay pot. The filter is a aquaclear 150. The tank is cycled ... 0 ammoia and 0 nitrites.

I'm concerned the 10G is overstocked too because I want to add a few more guppies to this tank.

[ACE1]

i have eight corys in my ten gallon with some other fish i dont think a couple more guppys will hurt your tank as long as you do regular water changes.why is your betta kept from the other fish.

[windgirl]

As for the betta ... he's a real A S S. First I was originally told fancy guppies and bettas don't mix time and time again. So I didn't try, but I had the tank half cories and betta, the other half guppies and cories. Well the darn betta attacked the cories at first site. One of my peppers is pretty roughed up, but he's been moved as soon as I noticed the attacks ... so far no infections and he's healing fast (I put in a little extra Big als water conditioner, which also contains aloe vara (sp?) )

As for water changes I'm doing 25% weekly on all of my tanks. If there is stale air I'm sure their is stale water out there.

[zac08]

Dun follow me, but you should see the numbers of Cories I have in my 14 gallon.... so your tank is still doing really well...

I have something like 30 cories (mix sizes) in my 14 gallon. But I'm running 2 filters for the tank now... one ext. cannister and 1 internal Eheim Aquaball (with 2 catridges). Feeding is quite frequent and with a stable warm temperature of 29°C, they seem to be doing pretty well.

[Crazie.Eddie]

Yes, you are overstocked. The general rule for stocking a freshwater tank is 1" for each 1 gallon. This is typically for fish under 3"-4". Larger fish will probably tend to be 1" for each 5 gallons (may vary).

Please use the following links for references regarding the stocking guide...

http://www.aquariumfish.com/aquariumfis ... 87&search=

There is an old rule of thumb that gives a very basic guideline that might help you until you gain more experience: "one inch of fish per gallon of water." In theory, using modern technology, it would be possible to exceed this guideline and add more fish. In reality, however, it is best to be conservative in this regard. Keep in mind that this "inch-per-gallon" guideline is for small, slim tropical fish larger, deep-bodied fish require more water per inch of length. Also, be aware that this guideline refers to the adult size of the fish, not the size of the fish at the time of purchase. Stores generally stock very young, small fish, which keeps prices low.

http://freshaquarium.about.com/cs/begin ... shcalc.htm

The most widely known rule for stocking a tank is one inch of fish per gallon of water. While this type of calculation works as a rough estimate, it leaves plenty of room for error. Like people, fish are not all the same size and shape. Stocking a ten-gallon tank with ten inches of slender shaped zebras is not the same as stocking it with ten inches of full-bodied goldfish. Larger bodied fish create far more waste, and therefore require more water volume.

http://www.aquariumpros.com/articles/stockguide.shtml

A good rule of thumb is one inch of fish per gallon of water but there are exceptions to this rule. The guideline of an inch of fish per gallon of water is based on a standard rectangular aquarium of normal height. If you have an unusually-shaped fish tank, such as a hexagonal, or extra high aquarium, try keeping one inch of fish for every 12 square inches (length times width) of aquarium surface area. Remember to allow for growth.

http://www.wetwebmedia.com/FWSubWebIndex/fwset-up.htm

The basic rule for keeping freshwater fish is one inch of fish per gallon to gallon and a half of water. No, this does not mean you can get yourself a ten gallon tank and put five 2 inch Oscars in it. This rule is based on the adult size of the fish you are keeping. It also changes for larger fish and depends on the aggression level and spawning tendencies of the fish.

http://www.adelaideaquariums.com.au/faq ... stionID=15

A rough guide to the number of fish is to allow approximately 1 litre of water per centimetre of fish where there is good filtration. Allow 2 litres or more per cm for small to mid-sized goldfish and cichlids, or where filtration and/or surface area may be limiting. Allow more water (3-4 l per cm) as the fish grow larger, or where they are territorial.

http://ourhouse.ninemsn.com.au/ourhouse ... 5996764b3a

The number of fish should be limited, as the new system cannot support full a organic load until the natural cycles have had a chance to establish. It is also important not to overcrowd the tank with fish. The basic rule is 1cm of fish per litre of water. Therefore, an aquarium of 100 litres provides enough space for around 20 fish sized 5cm. (Consider the expected final size of the fish.)

This last link looks like a more detailed way to calculate the load of your tank.