BIGGG alk swing what the heck?

ddc0715

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what the heck.?
1.A big ALK drop.
2. A ph drop.
3. A big mg increase.
4. The no3 doubled.
54520843_382456479258110_6227588951545217024_n.jpg



I auto dose the big three daily at 65 ml of CA an ALK. I dose the MG at 5 mls every other day... for a few weeks now the tank has been using more MG then Alk.
I did stir up my refugium a few days ago. That may be the reason for the high no3,but not to worried about the no3 tho.whats happened. Good Coral growth?= high demand
I have heard something i did not know was possible===="you might be dosing to much alk causing it to precipitate out. You can dose and dose and its going to rise and fall. I'd cut the dose to half and lower cal. Give it a couple days and retest"
im interested in knowing why my tank did this. like i said weeks and months of stability and then BOMB BIG DROP. what happen here and is this precp out theroy real. WOW f it is true then wow we learn something new everyday.
 

Randy Holmes-Farley

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Can’t interpret your question properly without knowing the actual value changes. Rising nitrate will lower alkalinity, but the result may also be test error or other things.
 

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