Death Spike

[ACB710]

Hi, I am fairly new to the hobby and only have one tank. I have been looking for forums to help with a problem of mine. I just recently had a death spike in my tank and I am looking for things to help fix it. I just recently had 3 fish die in a matter of one week. One of them appears to have been bullied by my gurami which I have separated, but the other two were separated already and they died in a matter of two days. They were babies but I had had them for almost two weeks and they had been doing great. The day before the first one died, that one started to slow down, I kept an eye on it and it slowly deteriorated. After that, the other one was fine but the next night, I found it dead! What should I do

 

[Autumnsky]

Please help fill in some info - this is taken from the "sticky" thread from the Unhealthy fish...

Before posting about unhealthy fish, read this!
Answer these Qs to ensure we have as much information as possible about your ailing fish and its environment:

1~What type of fish is afflicted? In addition, please describe what is wrong with the fish to the best of your ability (i.e. cotton like growth, bloated, etc.).
2~What are your tank parameters (ammonia, nitrites, nitrates, temp, pH)? Please give exact values.
3~ How large is the tank? How long has the tank been set up?
4~What type of filtration are you using? Please give the name and number (i.e. Fluval 304) and amount of gph if known.
5~How many fish are in the tank? What kinds of fish are they and what are their current sizes?
6~When is the last time you did a water change and vacuum the gravel? How often do you do this? How much water do you remove at a time?
7~How long have you had the fish? If the fish is new, how did you acclimate it/them?
8~Have you added anything new to the tank--decor, new dechlorinator, new substrate, etc.?
9~What kind of food have you been feeding your fish, have you changed their diet recently?

 

[Matt68005]

Your tank has to be 'cycled" as in, it needs to have good bacteria growing on the filter pad, like a brown gue stuff, to keep the water clean, by eating leftover food.
Leftover food rots, makes the water stink, and burns their eyes and gills and skin by producing ammonia.
Ammonia is toxic to fish, so you need to keep chaning the water, 50% every day if needed
until the good bacteria is enough to control the amount of food.
Your probably likely overfeeding alot, look at the amount of food from below the water line, see how much more it looks like?