Advice need on GH & KH

[StrontiumDog]

OK I've been naughty and left my tank without doing any water changes for a couple of weeks )

So before I did a water change(about 50%). I tested my water with a Tetratest kit(paper strips). Results are as follows,

No3 250
No2 0
GH >16 degrees
KH 0 degrres
PH 6.8

After the water change it reads,

No3 25
No2 0
GH >16 degrees
KH 0 degrres
PH 6.8

My question is, are the KH & GH that i'm reading any good? This is something very unsure about. If they are incorrect how do I raise or lower these readings.

I using two nutrafin ladders with home mix yeast, water & sugar. Can someone point me in the right direction

thanks for looking

 

[pseud]

http/www.sfbaaps.com/reference/table_01.shtml

According to that chart, your have CO2 levels of, well, zilch. Or am I misunderstanding something?

 

[StrontiumDog]

pseud: I found that out today I just forgot to put it in )

so where do I go from here appart from trying to increase Co2, Is this going to help the GH,KH.

 

[Walt]

From what i understand, no....
CO2 will drive the ph down, but wont effect KH and GH....
You can drive the KH up by adding Sodium bicarbonate (baking soda).