Calcium 1000+ mg/l

This is my tank: http://forums.saltwaterfish.com/t/315411/my-aragacrete-pic

Looks like the picture is no longer active... Here, I will repost it:

Keep in mind that this was four years ago.  Today it is covered in corals, but you get the idea.  There is also a video in the thread I posted above that demonstrates how porous it is.  

Yesterday I ran a full array of tests on the water, and this is what I found:

Ammonia: 0

Nitrites: 0

Nitrates: 0

Iron: 0

Copper: 0

Calcium: 1,000 mg/l

PH: 8.2

,,, more if you want the numbers

Question: the calcium level is way higher than I expected.  (first time I have tested it on this tank) Usually I just test the basics, ammonia, nitrites, nitrates, ph, hardness, etc.  But a client of mine knew I had a fix tank, and purchased me a supper deluxe testing kit, and so I tested everything.  

Obviously the calcium is this high due to the lime in the concrete.  Everything seems to be okay.  One thing I have noticed is that my snails are actually reproducing, growing, and replenishing themselves, which is something that does not happen in any of my other tanks.  

Still.... I wonder... is that calcium too high?  

Nothing seems to be bothered by it.  Like I say, I have coraline everywhere, as in other tanks, and the corals all seem healthy.

Thoughts?

--

125 gallon

300 lb lr (I have added to it since this picture was taken.  I filled the right side with actual live rock, to seed the aragocrete)

Also, in the interest of full disclosure, I have not done a water change in probably 18 months.  Not something I am proud of.  But it is what it is.  Nitrates have stayed at zero, which prompts my water changes in other tanks.  So I have been lazy.  But I plan to repent soon, and do a series of water changes.

Pretty sure that it is not inaccurate.  The test procedure is quite specific, and hard to mess up.  The test is produced by Hagen / nutrafin.  

You put three drops of one solution into the vile, (which already has tank water in it) and shake.  Then one drop of another solution, and shake.  Then add a drop at a time of solution # 3, and shake, until the solution turns purple.  You then multiply the total number of drops of solution # 3 by 20 to get your final mg/l.  

In my case, it took 50 drops to turn it purple. 

Water is crystal clear.  

ph is 8.2

kh is 90 (which surprised me.  That is lower than I would expect considering the lime in the tank)

I don't have a mag test.  

Also, like I say, the fact that my snails are reproducing, and growing would seem to support that there is a lot of calcium in the water column.  

Quote:

Originally Posted by Bang Guy 

If your Ca level was that high your Snails would not be able to grow or reproduce, same for corals and any other Calcarious organism.  They just would not be able to create any Calcium carbonate.

Interesting.  I suppose it is possible that the test is inaccurate.  But nutrafin tests have always proved to be very good in the passed.  

Just a note that I confirmed the earlier results.  The calcium is indeed 1000 mg/l.