It's pretty obvious what your problems are, but evidently you do not care about the welfare of your fish as you are ignoring everything people have been telling you. If you don't want to accept your problems, son't ask about them.
Water quality is an issue, nitrate is too high and nitrite should be 0. By adding more fish to a tank with Old Tank Syndrome (through neglect) you have caused a mini-cycle.
Volume and Frequency of water changes: hmm, this is a new-ish tank about 3 months now so had a couple, and was toped up a little this sunday
Again, you should be doing 25% water changes every week. Not every month.
Tank inhabitants:
1 GSP puffer (2 1/2 inchs), 6 small daneos, two brissel nose plecs one very baby, cymease fighter, 2 baby angels, oh and 2 drawf honey grarmey
You GSP should be in a brackish tank. That is the main problem, apart from aggression issues (which probably will happen, just becasue they haven't yet doesn't mean they won't). Probably issues with the betta, inc. fin nipping from other fish to him, and aggrssion from him to the other fish.
the tank is a 40 leter tank and the temp if no where near 40, its 26 (as of monday) and rarely changes much (apert from in very hot waether), the the only things to have been added to the tank are as follows: p
So, a 40l tank? Not gallons? If that's the case, the only fish you could possibly keep would be either the gouramis or the betta. It is too small for any of the other fish.
i suspect that the to fish are suffering from stress as they were added befor the the pump change and to move them to a seperate tank would be even more stress full (thats my opinion)....
I think 'stress' is a bit of an understatement... Bad water quality, compatability, tank size, and most likely other things not being taken into account.
Explanation for high nitrate== nice and easy== OVER FEEDING, i have pointed this out and explained, but by posting here i hope that she thinks im not mad....
I think it's a lot more than that... But I wonder why you are still overfeeding even though you know full well it is poisoning your fish...
sorry but why is EVERYONE so agest my puffer?!?!? she is lovely and dosnt take a blind bit of notice ot any of the other fish!! if something comes towards her she swims the other way!!
We're not against the puffer, we're against how you are keeping it.
and my water levels were doing great before the filter went and as darv said we put the old spones ect from the old fiter ointo the new to try help it along!
I doubt that if your feeding and water changing regime is as has already been said.
u've toldme i have bas taist in fish
No, we've told you you aren't keeping them properly and how to remedy that... And to research what you buy (if you had you wouldn't have ended up with the puffer).
even though they're all veyr happy to geather and nohtings been eaten!
Yet. It will do eventally.