Ca & KH results

[Reefer Rob]

I would just dose the calcium supplement. Your Alkalinity is perfect, maybe even a tad low IMO. Judging by your numbers it looks like you've been using Instant Ocean salt. If thats the case you should check your magnesium before you raise your calcium too high.

[jasond]

You guessed it . Instant Ocean. When I had my water tested for Mag test a couple weeks ago, it was low too. I have been dosing that too, but only once a week as instructed on the Kent bottle. Test kit to come.

From what I understand, if Mag isnt high enough, it is difficult to raise the Ca, correct?

[mark]

Your right about the Mg, if it's low it will keep your Ca down. Should be about 3:1 with NSW @ 1280ppm

[Myka]

Also, be aware that your Alk will rise when you add Calcium, and vice versa.

[Bryan]

Before you start dumping money into the tank perform some large water changes. That should get you back up to NSW conditions, then fine tune with the supplements. Instant Ocean mixes to about 350-360 ppm Ca

[jasond]

Thanks guys!

Bryan, I will give that a shot and do a couple larger changes, thanks for the tip.

The few corals I have dont seem to be doing too bad, but maybe just not thriving like they would with ideal water conditions. On a side note, do any of these three affect fish health at all?

Jason

[mark]

Originally Posted by Bryan

Before you start dumping money into the tank perform some large water changes. That should get you back up to NSW conditions, then fine tune with the supplements. Instant Ocean mixes to about 350-360 ppm Ca

I was dosing Ca, pushing a reactor and doing water changes and the Ca just wasn't staying up and seemed to be going down more that the Ca demand should have been for the corals I had. Finally clued into that it might be the SW used for changes so started testing fresh batches. One pail of was getting CA of 325 ppm, second pail with 275 using both ELOS and Sailfert kits, salt was IO, with low values for Mg as well.

[jasond]

Originally Posted by mark

I was dosing Ca, pushing a reactor and doing water changes and the Ca just wasn't staying up and seemed to be going down more that the Ca demand should have been for the corals I had. Finally clued into that it might be the SW used for changes so started testing fresh batches. One pail of was getting CA of 325 ppm, second pail with 275 using both ELOS and Sailfert kits, salt was IO, with low values for Mg as well.

So did you switch salt? Which brand? I will test my fresh SW with my elos kit tomorrow and let you know what mine comes in at.