tank size

[wt1961]

I have a 200L fresh water tank equipied with
900L/H Canister filter,UGF with 2 heads,airstone.
It's possible with this configuration to put togather: Discus + Angelfish + tetraneon
Plz sugest me howmany fishs can i put for every species.

Thanks.

[TomFromStLouis]

The rule of thumb for adult angels and discus is one per 10 gallons (~4 liters). I am not familiar with your filter, but if you reliably change water frequently (especially for the discus - breeders change 50% per day!) you might be able to stock more.

EDIT: 10g = 40L +/-, not 4!

[thom336]

When working out stocking the best way to do it is by surface area, where gas exchange takes place, and you also have to bear in mind that discus and angels require height in the aquarium - so the tank would have to be long and wide (for greater surface area) and deep.

There is a stocking density calculator at:
[urlhttp://www.practicalfishkeeping.co.uk/pfk/pages/stocking_density_calculator.php[/url]. When using it dont forget to select what type of measurements you are using, and the type of aquarium.