I need some help again please, I introduced 6 cherry barbs to my aquarium on Monday after cycling the aquarium and making sure the water was right before I introduced the fish, however, I tested the water about 30 mins ago and the ammonia reading is very high as is the nitrite reading, I've immediately done a 35% water change but what else can I do to drastically reduce this high ammonia and nitrite reading?
I don't want to lose my new fish
I don't want to lose my new fish