Two parts provide about 18-20 ppm calcium for each 1 meq/L (2.8 dKH) of alkalinity. Calcium carbonate is 20 ppm per 1 meq/L, but some magnesium gets into the structure in place of calcium, so the calcium demand is a tad lower. They also need to provide things like potassium, sulfate, chloride, bromide, etc. at a specific ratio, not because any of those are necessarily consumed, but to maintain them when there is no demand.
Well I can be a numb scull hence my misunderstanding of these values. I interpret this as if I run an Part 1 alkalinity level of 8.4 dKH Part 2 will only give me 54-60 ppm Ca?
I have made several tests on 1 cup of purified water for each part.
1- First test was based on RCC Ending points of 416 ppm Ca and 140 ppm Alk
- Additions - .21ml Part 1 / 1.625ml Part 2
- Results - 100 ppm Alk / 325 ppm Ca
2 - Next I used equal parts
- Additions - 2ml Part 1 & Part 2
- Results - ? over 600 ppm Alk / 375 ppm Ca
3 - Last test in attempt to bring my alkalinity into a usable range
- Additions - .5ml Part 1 /2ml Part 2
- Results - 260 ppm Alk / 375 ppm Ca
All three tests show Ca levels could not be maintained if additive was dosed in equal parts. Something must be happening to these levels after adding to saltwater? Whats interesting in the test results are that even at a ratio of 1/4 I wouldn't be able to hit my target zone. I am able to keep my levels in the zone with additions with a 1/3 ratio. I have used this product since it was introduced. I have never tried to test the batches , They are marked with a lot inspection number so I can only assume at this point my samples are good.