The chicken or the egg (calcium or alkalinity) what is first

Rory

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Don't think it really matters. Do the one that's worst first... As for pH I have never ever adjusted pH directly, pH is like a side effect of other parameters to me. Adjust the alk and calcium to the correct levels and then figure out a maintenance dose and then maybe worry about the pH.
 
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Quinton

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Thalion, how does your calcium reactor work that you don't have to worry about alkalinity and calcium? I was under the impression that all they did was dose balanced supplement at a constant rate? I've never fully understood all these reactors, I must confess.
 

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Trying to kep it simple, the nano already looks like an ICU with all the pipes and wires some in and out of it.
For a nano, you should not need one, but a Ca RX does help simple.:razz:

Thalion, how does your calcium reactor work that you don't have to worry about alkalinity and calcium? I was under the impression that all they did was dose balanced supplement at a constant rate? I've never fully understood all these reactors, I must confess.
You said it "dose balanced supplement at constant rate", you don't have to worry about Alk, Ca & magnesium. When things are set up you don't have to worry about them, just test for them now and again to make sure things are fine.
 

Rory

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Hmmm looking back at my post now I realise it may have been somewhat misleading. If you calcium and alk are both really low you must put in a little bit of alk, then a bit of Ca, then a bit of alk, then a bit of Ca etc. By doing one first I meant do the first dose of that one first, not take Ca from 100 to 400ppm in one go!
 

Rory

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A calcium reactor will dose at a balanced rate, ie. both at the same time and in the right proportions. However you do still have to fiddle with it quite a bit to make it dose at the same rate your tank uses ca/alk and possibly magnesium.
 

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