5 - 1 = ?
Input the result from the expression
Maximum attempts you can try: 10
Re: Fishless cycle readings
Subject: Re: Fishless cycle readings
by Fishlady on 20/12/2019 20:55:39
The chances are that nitrate is in your tap water to start with - most UK water has some nitrate in it; mine has 40ppm. Test it to see.