my frogspawn has retracted into its skeleton from what i am guessing is too much calcium. it has been retracted for about 10 days. about 2 days ago i did a 60% water change because my calcium level was at 540 ppm. unfortunately the water change raised the calcium even more to 600 ppm! this is way too high so is there any way i can lower it without doing even more water changes, since that would probably raise it even more?!