Setting up my first tank (90 liter AR620 bought second hand) for my 5 year old daughter. Very hard to find clear ammonia in Aus so decided to try the green prawn approach. 2 Weeks on, the Ammonia spiked at 5 ish 6 days ago and today it is at 0.1 ish. Nitrite peaked yesterday at 3.5 and today it...