Hi Fcmf,

Thanks for the Info, My tank has been running for a while (approx. 3 - 4 months) and I have a selection of Mollies, Platies and some Gourami.

I have been doing a 20% water changes every 7 - 10 days, I was advised by the local pet shop I may be doing it a bit to often so have not done a change now for 14 days I did the test yesterday so a, quite pleased with the water quality, especially since my original thoughts have been confirmed by the help given on here. I am new to the chemical test kits as I was just using the tetra 6 in 1 strips but they did not seem that accurate.

Hi James,

I have checked, the GH is measured in mg/L (ppm) which if I have calculated it right is 14.6 dH.

Hi James,

Thanks for the reply, I am going to have a look and see what the measurement is in. I am assuming it is in Mg/L, but will check.

The test I am using is the Nutrafin test.

I have been using test strips but have recently bought a water test kit. I am not completely sure what the results mean. The test strips are quite simple but I gather not that accurate.

The results I have got are - Any one able to give me some pointers?

PH = 8 - 8.2
Ammonia = 0
Nitrites = 0
Nitrate = 20
GH = 260
Calcium = 100
Magnesium = 24.3
Iron = 0
Phosphate = 0.5