My levels are perfect.. why?

[Spyd]

Since you have primarily softies and LPS, you don't need much in terms of Cal / ALK / Mg. Yes, the clam will absorb some as will the LPS, however, every time you are doing a water change you are adding all 3 from the salt mix. I highly suggest keeping up your regular maintenance of water changes twice a week as you don't want your tank to get too dirty and it is adding the big 3 additives every time which will help keep your levels steady.

[reefermadness]

Alk is low, ca a little high and mg is fine. Why would you want mg higher than 1300ppm that is already as high or slightly higher than natural seawater.

Also 20ppm nitrate is perfect for an lps tank but I would stick to you water change schedule and hold it there. If it starts dropping really low just feed more... lps love food and water changes will let you add more.

As far as major element utilization I believe it's possible you tank is just not using as much as you expected.

[neoh]

I like to maintain at 1350. I did forget about salt adding additives. I feed every other day, might be time I spoil them!