Originally Posted by mustafa shashaah
i used the Tetra Test 6 in 1 and this is the results
no3 : 100
no2 : between 1-5
gh : 16 degree
kh : 20 degree
ph : 8.0
cl2 : zeero
Well, this comes a bit as a surprise. If that is true, then you have an excess of Nitrates. And Nitrites should be zero. KH and GH are a bit on the high side, possibly you are using a substrate that is not completely inert?
One thing you might want to do is to "calibrate" your test kit by testing different water sources with known parameters. You might know what is in your tap water, so you could verify that. You could also test some distilled water which should show as zero NO3 and NO2.
Keep in mind that the "test strips" are not very precise. Still should give you a rough estimate. If you confirm your test results, it might be good to increase your regular water changes. NO2 is poisonous for fish.