The delicate Bioload

[blueheaven]

I find that the rule of thumb for the bioload of LS in tanks is very accurate. i currently have 2 fishes in my tank and everytime I add an extra fish, the new fish will certainly die.....

they either succumb to diseases or die mysteriously. anyone can shed some light on this?

[Dispar_Anthias]

Anyway how big is your tank

whoops saw another thread in tank spec forum is 2 feet. IMO you can load more than 2 fishes ina 2 footer..... Maybe gotta do with the lfs you buy the fish from

[blueheaven]

I buy my fishes at different LFS. now also dunno wad fish can add.

[Achilles Tang]

The rule of thumb is also dependant on how big your hand is.

Seriously, your stocking level is directly in proportion to your filtration system, or rather, its effectiveness.

Perhaps your tank needs more time to be matured? Perhaps there is some improvement to be made? An upgrade somewhere perhaps?

It is good to test your water parameters everytime you add a new fish to see if your filtration system can cope with the increased ammonia, nitrites and nitrates. If it's pushed over the edge, usually, most of the fishes will die.

In your case, if its one fish only (the new fish)... it could be other things like:

1. You didn't acclimatize your fish properly to your tank water.

2. It was bullied, attacked or eaten by your other fishes.

3. You got yourself a poor specimen?

4. Disease/stress from parasites?