Pufferlover - Another question on my Puffer

[old salt]

I have my puffer in an 18 gal tank (it was my calurpa tank). The tank is bare except for a heater and a magnum 350 with a micron filter. I'm treating with copper. He's been in the tank for 2 days and the ammonia is 1.0.
Can I let it go up anymore before I do a water change?
How much water should I change? is 25% enough?
How long do I need to treat him?
Thanks for the help and encouragement...

 

[pufferlover]

Well if the copper level is where you want and need it to be (based on the copper you are using and a test kit that I hope you have) a water change can be done as long as you treat the replacement water with the number of drops of copper to put it where it should be. I hate to admit this here but when I treat with copper I test every other day for strength but I have never done tests for other things (I hear the groans out there now- but it is just how I do it not what is considered the right way to do it). I have never lost a fish while using my good old SeaCure Copper (I have a 55 gal drum of it here- least someone believes me I'm kidding). I currently have a little 20 gallon with a eel and baby Pork under copper for a Ick problem with the new baby Pork (he is fine now and the 21 days is almost up). Today I did a 3 gal water change and added 3 drops to the new water before I put it in later I tested and it was at .15 where I need it to be to do the job. Now again I should mention that a Pork has scales so I use Copper a Dogface is smooth skinned and with them I use hypo-salinity as I am afraid of copper burn on them (have had that happen in my early days).