You have three fish now...
Adding three would instantly double the load on your biological filter....a big risk, and the most that many people would take. Odds are pretty darn good you will get an ammonia spike in there, simply because the bacteria will need some time to multiply in response to the new increase in bioload. You would have a lot of new fish, in a rather small tank (my opinion), stressed by the typical bullying that accompanies going into a new established tank, and having just arrived after shipment (not just to your door, but from capture, to wholesaler, to supplier to you) and
then they have to deal with ammonia in the system. Not a great situation. I see little white spots....
Adding 5, therefore, would almost certainly mean trouble.
Keep in mind you may not simply find a few new additions dead. It is Murphy's law that you will find you favorite/oldest/most expensive fish dead. Or you may find everything dead. Decisions such as these should be made by considering the worst case scenario, IMO. That usually makes the answer crystal clear. As others have said, the cost of replacing everything may make it a bad deal.
The golden rule of the hobby is patience. Package deals, unless the contents are split and sent to different tanks, a rarely good deals (at least for the livestock involved).
But the question really is....
If someone in this thread said it would be fine, would you still do it, even with all of the other advice?
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Brittlestars!!
http://home.att.net/~ophiuroid
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[ April 14, 2002: Message edited by: ophiuroid ]</p>