Thanks guys. I think I've got the basics now. The people at the shop I got it from didn't have a clue other than "the chemicals are needed to stop the water turning bad"... oh, really, you think???!! - and "here's some tablets", a bucket of 50Cubic Metre (50K ltr) tablets. Great, I'll get my knife out and cut them into 5ths then shall I ? Planks!

So with your info and the little I know I've more or less got it sorted and managed to get some 20g tablets of 4 in 1 for the Chlorine and the Ph + and - stuff. Also, to do the Ph before the Chlorine and to check regularly with the test kit... albeit not very precise as the little paper strips aren't the most accurate things around, but should be safe enough if I stay within the limits.

The Alkaline etc., etc., etc., I'm going to ignore as I don't want my own lab by the time I've finished with this thing.

Thanks again,
Xose

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