what order to add the chemicals

I was just thinking that the water volume difference would have bearing on it, that's all.

Thank you, Watermom!

Quote:

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Originally Posted by alisonquilts

The only reason I am so curious is that I am sure I read a thread which mentioned a couple of chemicals that would precipitate if you added them too close together

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That's when you add calcium PLUS either sodium bicarbonate (Alk Increaser) or sodium carbonate (pH Increaser) at the same time. You have a vinyl pool, so you NEVER need to add calcium. (Problem solved!)