I will be turning a recently vacated tank to a hospital tank. To keep the tank fish ready I assume you must add ammonia on a daily basis?
I am thinking it might sit there empty for weeks or months till needed.
Just curious how others handle
Thanks
I add a cycled sponge, too. If your sure that your Discus are clean there will be no cross contamination IME. The worry is doing it the other way around and adding a sponge or squeezings from the new fish to the Discus.
Mama Bear
thanks Mama Bear.
I too was wondering this. I will be adding a sponge in addition to my canister setup now. Thank you op for asking
If you can ask and get seeded sponge from the same tank from your discus supplier along with your discus , it would be even safer option .
I always use my one sponges if I'm sure of my existing fish. Once upon a time I got some show quality fish in. In that case I used a sterile sponge and did 90% WC until the sponge caught up with the bioload and I was able to go to 50% daily. My existing fish had what's called Discus plague 7 months earlier so all I could do was change a ton of water in their tanks before risking bringing in new fish. Hansie told me what to do. Either way you need to add a sacrificial lamb.
Mama Bear