Measuring co2 levels. Parameter issue?
I recently bought an NT labs aquarium lab test kit because I haven't checked my parameters yet. I purchased a biorb life 60 approx 2 months ago second hand along with livestock and some plants already in the tank. Luckily all livestock survived the 40mile journey home in about 10 litres of water in the bottom of the tank in the back of the car!!
The tank has been doing well and although originally bought for my wife/ young daughter I have gradually got the bug back again (I used to have a small fluval edge planted tank back in the day).
To cut a long story short I did a 25% water change and thought I should really invest in a test kit to check the levels as I wanted to see what the co2 levels were for plant growth. I have PH of about 7.8 , the concerning thing was the KH level. It took 14 drops to change the water colour so am I right in saying its a KH level of 14? I believe it should be around 6?
Does anyone have any ideas as to why it's such a high KH reading pressuming I have read it correctly? I did dose with plantamin yesterday could that be giving the reading? Looking at the chart online the co2 mg/L is very low about 4.
I'd like to get the co2 to optimum level but I don't want to go and dose with co2 until I know what's going on with KH and it's safe to do so.