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Originally Posted by sphelps
How is bio-load neutralized? There are always bio-products and elements needed for every reaction. For example and in simple terms raw organics eventually turn to nitrates and phosphates, how are these removed? Chemical filtration removes many trace elements and refugiums will also use up elements such as iron and iodine. These have to be replaced but for the average hobbyist they are virtually impossible to test for accurately. You also have to think long term, perhaps a tank will do fine for a long period of time as the elements slowly deplete as livestock adapts and it can handle a certain amount of stress unfazed but then levels fall below critical and things start to go wrong. Clueless on what exactly is issue is you begin bringing up levels but doing so too quickly results in even more stress perhaps even enough for some livestock to call it quits and dramatic changes in chemistry can cause all sorts of problems like algae outbreaks.
Can it be done, sure but I think it takes more experience than most of us have in order to avoid screwing yourself in the long run. There's no doubt I could stop water changes for months without issue but eventually things will probably go bad and then going back could make things worse. Dosing would help but if you can't test for it knowing exactly what's needed is next to impossible. Constant water changes insures stability overall and IMO is key to long term success.
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Well put. I might add however, that we can know EXACLTY what our water is putting into the aquarium so logically, we can adjust for it.
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For example and in simple terms raw organics eventually turn to nitrates and phosphates, how are these removed
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Chemical/biological/mechanical filtration.