Backyard Aquaponics
A place to discuss aquaponics

My silvers are stressing all tests are good temp=24 ph=7 all the others are =0 i have 3000 litre water flood and drain 3 min in the hr[ just increased to 1=3min and 2=2 min ] i have 4 airstones running i water the dirt garden with fish water and replace with de chlorinated water 300 litre every 4 days all my water is hooked together the 10 silvers in the duckweed show no signs of stress see photo of a stressed one note pink tail

It's not ich is it, remember Murray's fish a couple of months ago? Are the other fish aggressive towards each other?

Dont know it there a known cause for itch

I'm fairly sure Ich is a fungus that strikes when the fish are stressed for whatever reason. Just checked, it is a protozoan disease. Have a look here for info about it.
Salt is the cure you will have to use. Silvers can handle a fair amount, but start at 3ppt (3kg per 1000L). Dissolve it in a bucket and toss the lot in. Don't add it gradually or the Ich organisms can acclimate to it. You need to stun them into submission with the salt. Treat for about a week.

Ich is normally brought on by stress, have you tried dosing that one with salt, its become the AP favourite cure-all, increase the salt content to 3ppt.

If that tank is 100 litres of water then add 300 grams of salt - if you're not sure, throw up the tank measurements (to water level)

Struck down again - Jaymie submitting before me

ich is a parasite not a fungus

the tail looks like its copped some damage?

what are your water parameters? eg nitrites, nitrates, ammonia. I think high levels of these will cause stress like that?

all tests good see first article

Any recent changes in light level or noise level? I'm grasping for straws here...

What are the other signs that make you think they are stressed F&F? Are they flashing. How long have you had these new fish?

Sounds like copper is a good cure too.

Hi janet i would go for light level i normaly keep nearley covered when I show some body i uncover and pump tanks down to 12 in so yes level to Maybee thats it looks like we leave alone

What copper frying pan

Hi veg about a month as far as flashing something seems to touch the air lines a bit but lyndsey from the fish farm said when the tail is pink it/s stress

just loaded up with 3 pps salt 3 kg to the 1000 litre good price to 25 kg $9.00 rang the manifacturer he said all the big fish and aquariam places use it And added 300 litres of de chlorinated water so now sit and wait