Check your waters!
https://thefishvet.com/2016/03/15/is-that-water-good/
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Yours sincerely,
Dr Richmond Loh
DipProjMgt, BSc, BVMS, MPhil (Pathology), MANZCVS (Aquatics& Pathobiology), CertAqV, NATA Signatory.
THE FISH VET, AUSTRALIA.
Mobile Aquatic Veterinary Medical & Diagnostic Services. Locations: Perth, Melbourne, Townsville.
http://www.thefishvet.com.au
Ph: +61 (0)421 822 383