tommyleestaples

I am dosing using the EI Method on my tank and I have just started fishless cycling. I added 5 ml of Ammonia to my 120 litre tank to raise the level to 5 ppm and have been monitoring it. It dropped to about 0.50 ppm and then I added a further 3 ml to raise it back up to around 3 ppm overnight it has dropped back to 0.50 ppm. Seems like everything is okay so far? My Nitrites seem to have stayed high 3-5 ppm they havent dropped yet or increased off the scale. I am planning to keep adding 2.5-3 ml of ammonia untill Ammonia and Nitrites drop to zero within around 12 hours.

My question is as I am dosing using the EI Method on Sunday I will need to do a 50% water change. Will this affect my cycle? At present my tank has no fish in it only live plants.