Need help for my water quality

[Andy Lee]

I am a aquaponic beginner here, this morning I did a water test using API 5 in 1 test strips and the result as follow:

PH = 6

KH=40

GH=180

I water some yourtube video suggest use egg shell to move PH value up but Calcium seem also affect GH value more

Please advise

[George]

That PH test only displays down to 6, I think, which means your PH may be lower than 6.  You could quickly raise a bit by drying egg shells and finely pulverizing or grinding them.  You can use a coffee grinder.  Add small amounts until you determine how much is needed.  Low PH, if too low, can kill your bacteria.  

I suggest that you use whatever you have on hand to raise it at least above 6.  Egg shells can work quickly if ground finely. Calcium Hydroxide from a garden store will work.  If you have baking soda on hand, that's an option.

What I generally use to raise PH is Potassium bicarbonate.  

[Andy Lee]

I used egg shell for adjust ph since yesterday  now to ph to between 6 and 6.5

Thanks for advising