8.8tsp of Reef Complete to raise 25ppm

[ultra spikey]

I just bought a bottle of Reef Complete to raise my Ca levels. Using the Reef Chemistry Calculator, it says, in order to raise my Calcium from 400 to 425 I need to dose 8.8tsp of Reef Complete. BUT, on the bottle it says 1 capful(1tsp) will raise Ca by 10ppm. So to raise Ca by 25ppm, thats only about 2.5tsp. Why such the big difference???

Also, I read somewhere that I shouldnt raise my Ca more than 25ppm a day. True?


EDIT:
Nevermind...I read the bottle wrong. 1tsp PER 20 gallons will raise the Ca by 10ppm. Since I have a 75g tank, it'll take about 3tsp to raise it 10ppm. AND, to raise the Ca to 25ppm would take 7.5tsp.

[Billybeau1]

[chimp]

You can raise calcium much more than that in one day.

And believe me, don't go by the directions on the bottle.

I use Reef Complete myself and jd's calculator is right on the money.

Pay no attention to the man behind the curtain. "Wizard of Oz" thing. :D

Manufacturers often scale back their recommendations so newbies don't nuke their tanks.

You can trust jd's calculator I assure you. :)