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#1
12-11-2015, 09:12 PM
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Yes calculator say that, I should mention even with 200ml wont get up to 480 where was no problem before, usually I'm happy with 420-450 and 8-9 DKH.
Will try to get MG up to 1400, my salt mix "Reef Chrystal" also have strange low KH to start with 7-8 and 400 CA, I had used various salt mix in the past all worked fine even the generic AquaGiant "only a few times for experiment" Calcium was tested with Salifer, RedSea and API so I know it's low. 
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#2
12-12-2015, 01:01 AM
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Are you dosing by hand? Invest in a doser and you will wonder why you ever went so long without one. Bubble Magus just brought out a neat little doser where you buy a single digital "master" and you can buy "slaves" to daisy chain to it. I think the Master is a bit over $100 and the slaves are $75?? So for about $200 all in you could have a doser.
The amount you're going through isn't unusual. I don't like the API kit for calcium though (alkalinity one is fine), and much prefer either Elos or Salifert.
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#3
12-12-2015, 04:38 AM
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sounds like a low dose to me
 my tank is 120 G and have about 15% the corals you do and I go through a gal/month of cal and alk. Id try a new test kit beofre I made any drastic changes because your tanks looks great
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250G DD LED SPS R.I.P. 180G LED SPS 80"x36". 300G custom build Owner of Mountain Ridge Heating and Gas Class A gas fitter, HVAC
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