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Zitat von Carsten Logemann: „Hi Kolbass, my first guess is, your ph-Meter or drop test is not correct,... how much mikrosiemens or TDS is you rear osmosis water? “ Wow! This is a new idea for me... Thank you so much, I'll check pH using another test kit.. and sorry I don't have a TDS meter... Zitat von Stuart: „Hi @Kolbass Are You using a demineralizer or a reverse osmosis system ? Demineralizers can give you a headache hitting the right pH value. Here's a good document that explains the chemist…

Hello, Sorry for English language, I don't speak German at all. I got a question about Shrimp Mineral GH/KH+... I use it for remineralization of the reverse osmosis water for water changing in my fish tank. Dissolving Shrimp Mineral GH/KH+ in a separate container (1.5 the measure spoon for 15 litres of the RO water), I got water with kH 4, gH 7 and PH more than 8!!! I tried to use Seachem Acid Buffer to lower pH but, of course, I've gotten low kH as well. KH is arround 0 to 1 what is too low for…