Hi there, We have just relocated to a remote town in Western Australia and the water here has a very high calcium content, does any one know if there is anything we can do to protect the spa?? Also, my test strips test for cyanuric acid, ours is off the scale on the low side - do i need to wory / do anything about this? oh and also... our alkalinity is a bit high - will the ph decreaser i have (spa guard balancer "lo'n'slo" ph decreaser) decrease the alkalinity too - active constituent 100% sodium hydrogen sulfate? thanks in advance, ive always relyed on the spa shops in the city to tell me what to do, so im a bit lost out here " title="Smile" /> We use lythium hypochlorite instead of bromine, if that makes a difference. Thanks Ziggy