Quote:
Originally Posted by ReefOcean
If all of my perameters are good, how is it more benifical to do frequent water changes. I know it is 'good', but how is it benificial? I am talking about diminished returns here.
Cheapness/laziness might just mean "to do what is required and only required"?
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Water changes replenish all the elements used by the system. The salt has dozens of components, and you only replace Ca and CaO3, maybe Mg. What about the rest? It's there for a reason. Reefs need strontium, potassium, etc. you don't replace those. While minimal, they're essential (they wouldn't just add it for fun). It also dilutes the DOCs (dissolved organic compounds) that affect the life in the tank.
Again, my question is why not do a water change?