For about two years now I have been putting small filter bags filled with crushed coral/shells substrate in my Ocean Clear filters on top of the Matrix. The 6.5 pH slowly dissolves this and I manage to keep both kH and GH at just around 10 degrees, keeping up with the periodic partial water change schedule I am on. All the alkalinity is owing to actual carbonate and I have found that I never need to use bicarb buffer to adjust the kH. I dose Mg and K in regular small amounts. I never dose Ca except as it occurs in the micronutrient supplementation I use. The K is always around 50 ppm, never lower than 40, and the Ca:Mg is about 2:1.
I am now experimenting with Reef Reactor (Md), using it in place of the crushed coral aragonite. I am interested to see how it keeps up the K and Mg without my dosing so much sulfate. I have the general idea that Reef Reactor will perform the job that the crushed coral has been doing with this added benefit. The strontium will probably rise as well - to concentration not normal to freshwater. While I doubt there is a problem with that, I am curious to know your thoughts on this.
I am now experimenting with Reef Reactor (Md), using it in place of the crushed coral aragonite. I am interested to see how it keeps up the K and Mg without my dosing so much sulfate. I have the general idea that Reef Reactor will perform the job that the crushed coral has been doing with this added benefit. The strontium will probably rise as well - to concentration not normal to freshwater. While I doubt there is a problem with that, I am curious to know your thoughts on this.
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