Yes i change my rez every 3 week, but i have to refill +-40l from mid flower every week.Ca(ClO)3 has always been attractive due to it's general availability and low cost, but unlike peroxide, I don't know if I should be concerned with oxidation by-products that would build up with repeated application of Pool Shock.
I'd appreciate some detail regarding your grow space and protocol for Ca(ClO)3. How much, how often, the volume of your rez, and the area of your grow space? How often do you change your rez?
I get that your adding 50 ml of your stock soln to a 100 l rez every 3 days. Do you change your rez during your grow; if so, when?
But its not needed, i could just refill it every week or two during tue hole grow