purple up for calcium?
- Thread starter ronj
- Start date
yea, Guy, I would also like to see that. Also I would like to understand why Calcium Hydroxide will NOT dissolve in my R/O water. It stays milky after almost a month in storage and the PH is stupid high. PH on my starting water (R/O) is about 8.1. Did I buy some old Kalkwasser?
http://www.fragoutpost.com/forums/showthread.php?t=8
This is a link to a forum that I use to go in all the time. This is where I learned to make a "drip" kalkwasser doser.
I still use it.
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Mercedes Benz W196
This is a link to a forum that I use to go in all the time. This is where I learned to make a "drip" kalkwasser doser.
I still use it.
_________________
Mercedes Benz W196
Calcium Oxide* not Calcium Hydroxide. Use Pickling Lime from a grocery store or SeaChem Kalk. Calcium Oxide is white and similar to flower in appearence. Mixed with water forms Calcium Hydroxide. Use a little less than a teaspoon, because it is very insouble. Putting more doesn't make it any better. 1 Teaspoon no more.
CaO(sloid) + H20(liquid) => Ca(OH)(liquid)
Calcium Hydroxide grey lumps that you might be using are dangerous. Mixed with water it creates Ca(OH) and H2 gas. Using this is not safe because the risk of eplosions and the reaction is highly exothermic!
Ca(OH)(solid) + H20(liquid) => Ca(OH)(liquid) + H2(gas) + thermoenergy in the form of heat.
Kalkwasser-German for "chalk water". Kalk meaning chalk and wasser meaning water. The idea for this came from Germany, a pioneer for many reef advances in the 90's.
All good things can be abused. Go easy.
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Bushmaster 2000
pwj1286":qjfk1bj9 said:
CaO(solid) + H20(liquid) => Ca(OH)(solid) + H2O => Ca++ + OH- (liquid)
Calcium hydroxide isn't a liquid. It is hydrated Calcium oxide. Most of the lime on the market, including Pickling Lime, is Calcium hydroxide, aka hydrated lime.
Calcium oxide is often called quicklime. It is very useful for most purposes because it can be made more pure cheaper than Hydrated Lime. It shouldn't be use in limewater reactors though because as Calcium oxide hydrates it gets really hot. Hot enough to melt an acrylic reactor.
cknowlto":3vcwoyu7 said:
PH of saturated Limewater will be above 12, this is normal.
If it's staying milky my guess would be that it's reacting with CO2. Make sure you don't overstir it. The more you stir the less useful it will be. I'd also suggest that you not store it. Make up what you're going to use for the week and no more.
ronj":9vrhbpmc said:
My sump is in the basement so that gives me a lot of space that most people don't have under their cabinet.
My RO unit fills a 32 gallon container and a float valve shuts off the water when it's full. That container siphons into an old IO salt bucket (~7 gallons). I add Calcium hydroxide to this bucket every week. This bucket is connected to another IO bucket as a settling chamber. Both buckets are sealed and air tight with one water line flowing in at the very bottom and one line flowing out about 1/2 way up. The settling chamber is connected to the sump. A piece of styrofoam holds the output from the sellting bucket 1/2" above the waterline in the sump to prevent backflow and it also keeps the output from clogging.
As the water in the system evaporates the level in the sump drops, this speeds up the siphon from the settling bucket. Since the settling bucket and the lime bucket are sealed any water that drips into the sump is replaced from the RO container.
Once every couple of months I clean out both buckets.
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