How do you know that? Again can you please give some more info/ papers on powdered CaCO3 that lowers phosphate in a saltwater tank or share your own experience, till this moment there are only statements from your side.
My comments are based on my experience and visual observation. If I add to much CaCO3 or add to often, my coral loose color. The same dulling of coral color occurs when decreasing phosphates using other methods.
The increase will be 100%. Saying it another way, if you cut the particle size in half, you will double the total surface area.
I would have thought that if you doubled the size of the particle the surface area would quadruple.
To clarify: We're talking about the total surface area for a bunch of particles with a constant total volume, but varying particle sizes.
Yes, you are correct, but the volume of the particle increases 8 times, we are talking about the surface area for a given weight of material.
It is 200% of the original 100%, so there is a 100% increase. And using percentage does sometime make thinking about it more difficult.
Cheers. I’ve been playing with sand and it’s great at filtering tiny particles, unless it’s fluidised in which case it’s rubbish
I’ve added calcium carbonate fines from unrinsed sand additions and a sock (preferably dirty) certainly speeds things up. I’m a little dubious about lanthanum being caught with a 10 micron sock however. Now, Lanthanum phosphate running through a static bed, that appears to be very effective.
