Increased consumption or testing error

[Letterkenny]

I test the big three via my trident and noticed lately that they have all started to come falling down while my dosing has remained constant. I am aiming for stability vs chasing numbers but curious if this could be more testing error than increased consumption? See below for the charts for alk and calc. Tank is a Waterbox 130 dosing ESV Bionic via DOS. Tank is about 3 months old and have had more coralline growth but not within this week time period. Also, at over 50% capacity so it is not using the last of the reagent and I calibrate when changing the reagents.

 

[BlennyTime]

You could test some pre-mixed salt water and see what values you get. The values should be available on the bucket.

 

[blasterman]

Without knowing what's in the tank in terms of coral load we cant offer much advice.

Alk is going to be crazy unstable in a 3month old tank as it's consumed by various biological stratas getting established. Calcium on the other hand should be stable unless you have a big growing SPS load.

 

[Randy Holmes-Farley]

The changes you are showing are small and are not balanced calcium to alkalinity. Thus I do not think reduced demand is the answer.

Maybe testing issues, maybe dosing issues, maybe something else.

 

[Letterkenny]

I tested again and am now running back towards the median. I’ve been pretty consistent with 15ml of daily consumption.