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@Randy Holmes-Farley @Lasse Do we know the rate at which bacteria/corals consume NO3/PO4? It is to my understanding that the readings we get while testing are just residual unused nutrients. So does this mean that the corals have not taken up those nutrients yet, or is it that they have taken what they can and won't take the rest up and they need to be removed(water changes, carbon dosing, etc)?
If it means they won't take up the left over residual nutrients then it would make since to feed heavy while keeping NO3 and PO4 low.
I don’t think the rate is known as we don’t discuss it enough.
if it was discussed a certain C N P rate could be determined for optimal function of a system.
All we know is that they are being produced and utilised on a constant movement. Very similar to Ca dosing the only difference being we know how much Ca we adding to the system. So we know how much Ca the System is utilising by testing the residual unused Ca
I personally believe that we can interpret the residual unused nutrients to determine what’s limiting or in abundance in a system. Giving the end user enough information to adjust the C N P input of a system to reduce residual unused nutrients.
The same way we do for dkh Mg and Ca