Backyard Aquaponics
A place to discuss aquaponics

Hi,
we bought fish at 25.05 which wasn't fit, but i drove lots of kilometers, and so i decided to pick them up.
The fish was hurt and infected, and my system not able to handle the amount of fish.
So i had ammonia and nitrite peaks.

Lost lot of them, and salted to 4ppt the system. (since 01.06.2013)
Since yesterday the dots are gone, but plants also die (lettuce).
I thought the disease was gone, because the ate yesterday (food with vitamine added).
Come around tomorrow and lost 9 fish over night.

Do you have a idea what i can do ?
Some of them jump and often stay under the surface.
The aerate is normal and water readings:

Ammonia: 0mg/l
Nitrite: 0.2mg/l
Nitrate > 100mg/l
PH: 7


Thanks Dom

make sure you got that greater than around the right way, if you have over 100mg/l of nitrates, that cant be a good thing for the fish.

Hmm we have in the cellar also carp, which lives in 200mg nitrate without any problems.
Would you change a lot of water, and when should i add salt or can i leave that to help the plants ?
Still no growing at the beds.
Some of the plants already die, or show yellow borders...

Rupert, this guy needs your help.

Sorry, im not going to hazard answering more questions, im not knowledgable enough to do anything but kill the rest of your fish.

Humm... so just about everything that could stress the fish... and the fish didn't sound good in the first place...


Well you've done just about everything else right... and that you can....

Sorry... but the fish just might be too damaged from all the other factors... to survive....

No need... or reason to change the water.... the salt is in... and doing what it may....

By your description... I'd say the fish were pretty dodgy from the start.....

Thanks Rupert for your response.
I've 50 fish at the cellar which should be moved to the pond soon.
But i'm angry that they also get infected.

What can i do to help the lettuce and other plants in the growbed ?
They don't grow, not a small mm...
Sound like internet for too much salt.
EC readings 5,3mS/cm...

Most plants can handle up to 6ppt....

But seedlings... and lettuce etc.... could well be impacted....

Sometimes the choice is simply.... Do you try and save the fish... and if need be replace the seedlings....

Or save the seedlings... and replace the fish...

Whichever will be cheapest and easiest.

But actually both is bad healthy.
My wife called me that now the next 6 fish are dead...

It looks like he will lose all of the fish, should he now drain and clean the tank to try to remove disease before getting new fish?

Good morning,
every day i lost 10 fish
The water readings are good, but some nitrite are available.
If i feed the eat very fast and quickly and nitrite doesn't raise.
But 0.2 - 0.3mg/l are always present.

When i come at home i wanna change 75% of water.
So i reduce the parasites which swims in the water.

The dead fish has all a black green dot near the stomage.
I think it the gall.

You may be best giving up on this lot, make your system clean and ready for the other ones you have inside.