I've just started cycling my new 55g tank. I'm getting some 9.5% ammonia later on today (doing a fishless cycle). My question is, I've already added in 3 days worth of Nutrafin Cycle (before reading how useless it is). Do I have to do a large water change to get rid of the NC before dosing with ammonia? Or can I just carry on without a WC
Thanks in advance.