magnesium issues

[bertoni]

I agree that the time of day doesn't matter much, although testing the same time every day helps keep better track of the consumption rate.

 

[acrlee]

Going down to test the Mg one more time.... I have fed half the 2 liter bottle now, so I am hoping I see some effect in a good direction. I am kind of wondering how much I have added.....

 

[acrlee]

Well.... we got about 925-950.... and the 2 liter bottle was closer to 1/4 left in it than half full. So I think I either need to do some better calculations or my corals are uptaking it readily.

 

[bertoni]

Raising the magnesium will require vast amounts of supplement. Assuming the system has only 200g of water, it'll take 7 liters of the DIY supplement to raise the Mg from 875 to 1300.

 

[acrlee]

I had my Mg up a bit, but after a week long vacation things are back down???? I didn't add any Ca or Alk suppliment the whole time I was gone and I did put MgCl & MgSO4 in the top off drip line water.

Bertoni: if you are still following, What is that DIY suppliment recipe exactly that I would have to add 7 liters of? What amount of MgCl & MgSO4 are we talking per liter. I have added what seems like a lot to me and I am back to square one somehow? The system is at least 250 gallons of water, likely 275.

I will be adding another 100 gallons to the system soon.... is there a good salt mix out there with high Mg levels that I can use to help boost the levels?

 

[bertoni]

I would use the supplement that contains 7 1/4 cup magnesium chloride and 3/4 cup epsom salts per gallon of RO/DI water. I'd probably add it over a period of two weeks or so.

How much did the magnesium level change over the vacation?

There's a pinned thread at the top of the forum that contains a chart of numbers for a fair number of salt products:

http://reefcentral.com/forums/showthread.php?s=&threadid=1589326