Liquid CYA!

[chem geek]

It's somewhat different from pure CYA in that it is more pH neutral so you won't see the pH drop the way you do when you use pure CYA.

[waterbear]

The question is "is it worth the extra money?'
IMHO, no. Just get the powder and pour it slowly into your skimmer, Do not clean your filter nor test CYA for 1 week and then test and see where you are. I would start monitoring FC levels after about 2 days and adjust the output of your SWCG downward as the FC starts to rise. I believe you have a compupool unit so you want your CYA NO LOWER than 80 ppm and you really should aim for 100 ppm. Keep your FC NO LOWER than 5% of the CYA reading (5 ppm for CYA of 100 ppm).