perfect water parameters

Hi Everyone, I have just purchased a 2nd hand Juwel 180. I’ve always wanted a tank however I’m finding everything so confusing. I’m currently giving everything a good scrub as the internal ornaments are filthy. They’ve had them stored in the back garden in a bucket ?. I’m cleaning them with...

Hello Everybody! I'm new to the forum so bear with me here because this will require quite an explanation. I have a bit of a mystery that I need help solving before it starts killing my tank inhabitants. My 20-gallon long tank setup seems to be stressing any inhabitant that I put into it and...