Chemistry

Right for a few months now I have been attacking my Phosphate so I bought a D-D Merck Phosphate test kit back in April.

My previous test kit was a Nutrafin one and the lowest reading was 0.25mg/L, so pretty useless.

Once I started using the D-D kit my reading was actually 0.11mg/L.

Over the last few months it has slowly dropped to 0.03mg/L so things are going well.

Now if you are now familiar with the kit the colour scale from 0.03mg/L and above are various shades of blue. Whereas below...