Are you adding Prime daily? I've heard that Prime can mess with ammonia readings from the API liquid testing kit. My 2.5g has ammonia the second or third day after a water change, so a 3.5g might need 2 50% water changes weekly.
How did the water changes stress Sokka out? Did you acclimate him properly? The water change method suggest by Whippet shouldn't stress your fish out.
How did the water changes stress Sokka out? Did you acclimate him properly? The water change method suggest by Whippet shouldn't stress your fish out.