This thread is getting long and I didnt have time to read through it entirely but, I thought I would add my 2 cents.
First it seams you are adding cal/alk as you test for them and thus causing these to constantly fluctuate. You should get to the point where these barely fluctuate with at least daily dosing and if you have a controller hourly if possible. I have had great luck with the BRS Cal/Alk dosing products. Try the easy premeasured portions first and then you can get fancy with the more complicated bulk supplements down the road. I have never used Kalkwasser and from what I have read in a strictly SPS tank you will have to add supplement eventually.
Second, why are your Radion's only on 30-40%? What is your schedule? I have a radion and i have learned through trial and error how to use the lights (still learning),IME they are very different than halides or T-5s and you cant apply the same guidlines.
First it seams you are adding cal/alk as you test for them and thus causing these to constantly fluctuate. You should get to the point where these barely fluctuate with at least daily dosing and if you have a controller hourly if possible. I have had great luck with the BRS Cal/Alk dosing products. Try the easy premeasured portions first and then you can get fancy with the more complicated bulk supplements down the road. I have never used Kalkwasser and from what I have read in a strictly SPS tank you will have to add supplement eventually.
Second, why are your Radion's only on 30-40%? What is your schedule? I have a radion and i have learned through trial and error how to use the lights (still learning),IME they are very different than halides or T-5s and you cant apply the same guidlines.