Help, very slow weight gain

[Amazonlover]

I had an issue once with chicks long ago and I believe I used Corid which was added to their drinking water.

I completely forgot about Corid. I just added it now-thank you for the suggestion

 

[paddock36]

I completely forgot about Corid. I just added it now-thank you for the suggestion

You're welcome. I hope that helps.

 

[paddock36]

Any improvement?