Check out Prawn Nitrite “Colorimetric Titration” App…

https://play.google.com/store/apps/details?id=es.inforapps.chameleon

Digital prawn twin – for simulation modelling. Or just use the real thing?

https://www.mispeces.com/noticias/Disenan-un-gemelo-digital-que-simula-el-comportamiento-tipico-de-una-granja-de-truchas-en-Italia/#.YgNlRbfTUu9