Kalkwasser

[gandolf8]

Say I have to go Kalkwasser to raise my ph because of winter time. Now I also use B-Iinoc for Cal and Alk I have them on a dosing pump every 12 hrs Cal for 40 seconds and Alk for 20 sec. Now How much Kalkwasser do I add to the reactor to raise my PH . The kalkwasser is for water top of only which is hook up to a Tunze Osmolator Universal. and i use R/O water. I have a 90 gal tank with a 55 gal ref, and 30 gal sump. any ideas thx. My Ph is 7.8

[bertoni]

Kalk reactors aren't particularly controllable. I suspect most people just dump a bunch into the reservoir and replace as needed. I am assuming this is a self-stirring model?

[gandolf8]

Well I build it like the GEO kalk reactor

[bertoni]

That should be fine. Only about 2 tsp of lime will dissolve per gallon of water, so most people just dump a few dumps into the reservoir. I'd watch the tank pH carefully for the first few days, since limewater is very high in pH.

[palawan]

Make sure your ph probe is calibrated. Check it first.

[SuperNerd]

Originally posted by bertoni
That should be fine. Only about 2 tsp of lime will dissolve per gallon of water, so most people just dump a few dumps into the reservoir.

If only 2 tsp of lime will dissolve per gallon of water, then what do you mean they "just dump a few dumps into the reservoir?"

[Randy Holmes-Farley]

The excess stays there waiting to dissolve as more water passes through. As mentioned, controlling the potency by how much actually dissolves (often it is much less than 2 tsp per gallon) can be difficult unless you are stirring all the time, which often risks dumping lime solids into the tank (which is not optimal, IMO).