Not recommended, Baquacil is a swimming pool, hydrogen peroxide (Potassium) based chemical. Baqua Spa is the recommended (Potassium) based spa chemical.
Baquacil is completely imcompatible with Chlorine and usually the water will instantly turn green, you can use the Baquacil Chlorine Neutralizer to help disepate the CL out.
No, you do not have to change the water but you do need to wait until the CL reading is 0 before adding Baquacil or there will be a reaction and the water will turn green.
I have been using Baquacil for 18 years in an in-ground pool. I used chlorine in an above ground pool prior. The cost difference is obvious. Starting off new, Baquacil is very expensive. As the years go on, the cost of the sanitizer drops dramatically because of the baquacil buildup in the water. You dont have the chlorine smell and the eye burning. I recommend washing the baquacil from your hair since the hair tends to get heavy after swimming. Foaming is also a problem with baquacil. I still prefer baquacil and intend to use it after I install a new liner next year.
"Shocking" a baquacil pool. It is a non-chlorine Oxidizer used to help maintain good water clarity by oxidizing organtic compounds in the water from swimmer and other enviornmental debris.
You would be safest using Baquacil pH Increaser, which is a high purity, highly active dry alkaline product used to raise pool pH. In non-Baquacil pool water, both Soda Ash and Hydrochloric acid are used to raise pH levels. Pool shops are a good place to seek advice also.
A major DO for Baquacil is chemically cleaning the filter MONTHLY.
If you have Baquacil Test Strips then going to the Pool Center would not be necessary, you can just do it yourself and adjust the readings.
You do not measure the Chlorine in a Baquacil pool because they are incompatible.
Baquacil pool care systems try following the link below
Yes, "Baquashock", "Baquacil Shock", and "Baquacil Shock and Oxidizer" are all synonymous. Baquacil has been changing the names through the evolution but it's the same product. Most companies are now selling it as "Oxidizer (Shock)" - http://www.backyardexpress.com/baquaspa-oxidizer-shock.html
3 months...its not worth it! It should take only 2 or 3 days to treat chemically. Or you can dump the pool and refill, making sure to rid the filter of all baquacil mess as well (change cartridge, or change sand etc). e-mail me and I can send instructions re how to convert off baquacil.
No, bromine is not the same as baquacil. Bromine is a chlorine alternative, probably more expensive, effective as a sanitizer. Can result in odors as with chlorine and there are arguements about its safety, health wise. No, Baquacil is Hydrogen Peroxide.