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Excellent... finally learning science... my fiancé will be happy about that! Plenty of bicarb here so that is one less thing to buy for now. Sweet... nice and easy and crosses one more piece of research off my list! No problem. Your post has saved me money on this DIY for much more product *grins* Glad I could be useful even in a tiny way lol

You're welcome. Trihydrate just means 3 water molecules, where tri = 3. Pentahydrate means it has 5 water molecules, where penta = 5. So Magnesium (Mg) Sulfate (SO4) Penta (5) Hydrate (H2O) will be written as = MgSO4.5H2O The more water molecules, the easier it will be to dissolve in water. Thank YOU!!! AOS is back! That is the site I used to purchase my aquarium chems. I can update the sources on the first post now. You can skip calcium carbonate for now and go with Calcium sulfate for Neocaridina. Just add a pinch of Bicarb of Soda to your mix to raise KH.