I have an AStral 1800 series pump, but I have no idea what horse power it is. The writing in worn on it.

My PH has consistently been 7.2 even before I got the chlorine this high.
Yes, I am running the pump 24/7 and am backwashing as necessary.
My test kit is the TF-100.
The active ingredients in the Walmart Aqua Chem Xtra blue are Sodium Dichloro-s-triazinetrione 63.5%, Copper (metallic) .26%, Other ingredients 36.69%(it doesn't say what other is). http://www.poolgeek.com/products/aqu...FTJn7AodulIAig There is a link to the xtra blue shock.
Thank you so much for reading my thread!