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Message: <blockquote data-quote="RobB'z Reef" data-source="post: 9360331" data-attributes="member: 148803">Like most problems waiting to be solved there are multiple solutions to choose from.  Everything has pros and cons.  I'm of the opinion, the more complexity you introduce into a solution the more apt it is to fail and manage.  While what you're doing probably works at some level for you isn't going to be viable for most ppl.  Anything ppl dose in their tasks has a probability of failing and nuking their tank.  Kalkwasser isn't inherently more or less likely to trash your tank than any two part additive that goes haywire.When your alk demands exceed the evaporation rate of your tank that a normalized solution of calcium hydroxide can accommodate their is a more simple solution to handling it.  Dose a kalkwasser slurry.  It's what several of us out there are doing and it's proven to work and it's not complex at all.  It has no more or less failure points than any other given dosing solution has with perhaps one exception.  It can be a little hard on the mixing pump but that's been solved as well.  Just create a 3-4% by weight solution of calcium hydroxide with rodi water and keep it in suspension. You then dose the kalkwasser that's in suspension (note, it's not dissolved) to the tank as intermittently as possible based on your demand.  At 4% the strength is 24x that of a normal solution (1.73g/L is normal solution).  In some respects, the analogy could be used that you're using the system volume of water in your tank as a kalk reactor.  This isn't literally true but maybe it helps visualize.  You have to dose into a very high flow area to avoid abiotic precipitation but there are options for this.  A power head in your sump (what I do) or even straight down the main or secondary drain of your overflow (I've tested this as well).This isn't a method for normal alk demands, only when you want a simple balanced additive (Ca & Alk) and keep the solution super cheap.  Buy food grade Mississippi lime in 50# bags and it's ten times cheaper yet over any two part.  I calculated it costs me .06 cents per dkh on my 200 gallon system.</blockquote>

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