Water Testing. Is this possible

[EmergencyRn]

I checked my water today and got the following data. I also decided to check the quality of my mixed water with Instant Ocean Salt. I am using bottles of distilled water.

Data Tank:
temp 76.2
SG 1.025
Amm 0
nitrate 5mg/L
nitrite .1mg/L
phos .25
Ph 8.1
Ca 380
Kh 140mg/L

Salt Mix with Distilled Water:
temp 78
SG 1.025
amm .1mg/L
nitrate 0
nitrite 0
phos 0
Ph 8.1
Ca 380
Kh 150mg/L

Is this possible to have zero ammonia in tank and new water .1mg/L. Could there we Ammonia in distilled water?

And is Ca 380 with new water and salt mix to low? Does anyone have so similar results from Instant Ocean Salt?

Thanks for help

[Sugar Magnolia]

IO does mix low for Calc, also for magnesium. You can bump both up with additives.

Grab a freshwater test kit and check for ammonia in the distilled.