Thats a good point.I never taught that would be my problem.

Im using Still Mineral Water.

Here is the nutritional information in Mg per Litre

Calcium 82
Magnesium 9.7
Sodium 23.9
Potassium 2.2
Biocarbonate 228
Chloride 41
Sulphate 10.8
Nitrate 5.0

I dont have a ph meter but this should be arriving any day now.
eBay.ie: 3in1 Hydroponic Plant Soil pH/Moisture/Light Meter NEW (item 280164139183 end time 27-Oct-07 21:48:44 BST)

Antone know if they are accurate.

Is there any type of water i should use while i am waiting?