Is my cycle is almost over? :notsure:
It has been 3 weeks, ammonia, trites, trates all spiked high, and came down.
Ammonia 0
Nitrite 0
Ph 8.0
Nitrates 20
probably fine, the purpose of the water change is to get your nitrates out of the water because you have nothing, or barely anything that will break down trates in the tank.
A pH of 8.0 is only fine if the alkalinity or calcium are where they should be. If you are not testing these levels, I would definitely start just to ensure that you do not have pH issues on the horizon.