Urgent help required

[Dennistmenace]

I recently inherited a 200l tank and I am having serious problems with the water. Everytime I feed my fish the water turns cloudy and the fish start to die off. I have tried cleaning the gravel, I have checked the water conditions, I have checked that the pump and filter are functioning and have now for the 8th time this week swapped some of the manky water for clean water. What am I doing wrong???

 

[MEng]

sounds like you need to cycle the tank

 

[ron521]

How many and what kind of fish do you have? How much are you feeding them?

 

[OrangeCones]

I have tried cleaning the gravel, I have checked the water conditions, I have checked that the pump and filter are functioning and have now for the 8th time this week swapped some of the manky water for clean water. What am I doing wrong???

Are you dechlorinating the water you are adding to the tank? You don't say where you live so I'm uncertain of the water supply.

If you don't own a water test kit yet, see if a fish store close to you can test for: ammonia, nitrite, and nitrate. Report back here the actual numbers for each (don't let them say its 'ok' or 'too high,' get actual numbers.)

Good luck!

 

[aglowe00]

how long has the tank been set up? how long after you set the tank up did you add fish? are you making sure to do 30% water changes weekly with de-chlorinated water? what kind of food are you feeding and what kind of fish are in there?