How to lower ALK without lowering the rest?

[bushh23]

My parameters right now are:
NO3 - 0
NO2 - 0
PH - 7.98
KH - 15.5
CA - 465
MG - 1450
Salinity - 1.025

Trying to figure out how to stabilize my 180G without losing growth. So far only the mushrooms have not liked the water but everything else is loving it. I do water changes every 2 weeks of at least 20%, have a calcium reactor by geo and i dont dose anything. What can i do or dose to fix this? Any help is appreciated.
Thanks

 

[beaslbob]

Do nothing. both alk and calcium will go down.

(or if you must just dose some calcium (chloride))

edit and woopsies. turn down the calcium reactor a bit.

 

[bushh23]

When you say turn it down do you mean the drip into the tank or the amount of bubbles?

 

[kuyatwo]

I would recheck you ph ca and alk. If your alk was 15 I would think your ph would be higher and ca would be lower


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[Mike&Terry]

What is the PH in your reactor? You may need to raise it a bit by reducing the amount of CO2 in the reactor (lowering the bubble count).

 

[beaslbob]

Try lowering the pH in the reactor which also arees with the fact the tank pH is 7.9

my .02

 

[bushh23]

Ph in the reactor is 7.2 right now and the test kits are all new but same values as the old ones. Lowering the reactor ph lowers the tank ph