Dear Mr Randell,
You could DIY you own Kalkwasser Doser, by just using any empty plastic bottle.
All you need is to make a small hole about 4cm upwards from the base of the bottle. As not all kalkwasser would dissolve totally.
Make sure your empty bottle do come with a cover.
Next purchase those
green color air valve, commonly found at fresh water aquarium stores.
Secure this green air valve to the hole on the bottle you just made using either Epoxy or
Super Glue Gel.
Lastly make another very small hole on top of the bottle cover to allow the limewater inside to flow out when you cover the bottle up.
I am sorry i do not have any pictures with me now.
Dear Mr Shalom,
Kalkwasser is a German word for lime water.
Calcium Oxide are made by heating up Calcium Carbonate until the carbon dioxide is driven off.
CaCO3 -- CaO + CO2
When you add tapwater and not saltwater you form Calcium Hydroxide.
CaO (Calcium Oxide) + H2O (Water) -- Ca(OH)2 (Lime)
There are many grades of lime and some are graded by the amount of heavy metals and impurities they contain.
When you add a molecule of water to CaO, it generate a great amount of heat, thus at time certain plastic used for your kalkwasser doser may be damage due to the heat.
Calcium ions from your Calcium Hydroxide would be taken up by corals and Hydroxide ions would react / combine with air, dissolved Carbon Dioxide and Bicarbonate to form Bicarbonate and Carbonate. As your corals require alkalinity (Bicarbonate) but not Hydroxide.
Do introduce your solution into your reef tank slowly (may affect your pH levels) and not directly onto your corals (as it may burn your corals due to a high pH).
Do correct me if i am wrong, as i am still learning.
Sherlyne
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