Hi all,
It isn't perfect, but it gives you a framework to work with and doesn't require a lot of expensive equipment or a large input of time.
cheers Darrel
That would be the view I've taken, you can use the BOD concept, conductivity and plant health as a proxy for nutrient status and water quality.Monitoring an aquarium, is about general relative values and a holistic overview, so seeing a gradual increase in TDS will give you an indication that you may have increasing organics. You're unlikely to get a pure increase in non-conductive organics in an aquarium, without an increase in conductive organics also....If your increased water change schedule halts the steady increase in TDS, then you now your intervention was the correct one.
It isn't perfect, but it gives you a framework to work with and doesn't require a lot of expensive equipment or a large input of time.
cheers Darrel