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No, unfortunately i havent got around to doing it.. i already have a calcium reactor with 2 PH probes and a third PH probe in the tank - so it's a bit too much to have the fourth probe..Looks great! Do you measure the pH of the kalkwasser?
Kalk dosing is a BAD idea! It brings so much more instability that I see no incremental benefits of it..DOOOO ITTTTT! It would be the best proof of your thesis! Or maybe just collect some effluent say a month after refilling and test that with one of your existing probes.
Hi there! I'm considering an upgrade to my Kalkwasser dosing system and would really appreciate some advice.So the amount of Kalk I loaded in November lasted a bit more than 2.5 months - not bad in terms of low maintenance footprint... Just re-loaded the reactor with 250ml of Kalk a couple of days ago..
No issues with loss of potency due to air exposure as the reactor is fully pressurised..
If I were to build another Kalk reactor, it would look like the following:Hi there! I'm considering an upgrade to my Kalkwasser dosing system and would really appreciate some advice.
Currently, I'm using a DIY, high-tech, closed-loop motor peristaltic pump to dose kalk from a container.
I'm exploring ways to make the system more autonomous. I can envision two approaches:
However, there's one issue I'd like to address: I aim to dose only clear, saturated Kalkwasser. I want to avoid dosing Kalk slurry.
- A classic Kalk stirrer with a capacity of X liters.
- A pressurized, closed Kalk stirrer similar to yours.
This poses a significant technical challenge, as calcium carbonate becomes extremely cloudy when stirred.
I see two potential solutions for creating an ideal Kalk reactor:
I'd love to hear your thoughts on this.
- Prepare a saturated solution in advance for the entire day and allow the Kalkwasser 1-2 hours to settle. For instance, I could make a 2-liter reactor, mix it thoroughly, let it settle for 2 hours, and then dose it using a stepper motor doser. Once it's nearly empty, I'd refill it with ATO and repeat the process.
- Use a very tall reactor with a very slow mixer, similar to yours. However, I have serious doubts about achieving the desired saturation.
Thanks, I'm apriciate your advice.If I were to build another Kalk reactor, it would look like the following:
- not pressurised (for design reasons shown below)
- reactor water level controlled by mini float valve (if you take some water out - the float valve allows additional RO water top-up)
- non-magnetic stirrer: long shaft going through top lid with properller-like end to stir calc; stepper motor rotating the shaft slowly
- additional stepper motor-driven doser
- single controller that controls both stepper motors. [1-5] minute before dosing time you can switch off the stirring motor and allow the solution to settle down. You resume stirring immediately after you administered dose (Kalk should not be allowed to compact - otherwise it would form sludge that's very difficult to stir).
If you stir more or less continously - it should not compact. It only compacts if you leave it unstirred for a few hours..Thanks, I'm apriciate your advice.
Especially about non magnetic strirer, I'm also thinking that magnetic strirer is too weak, unstable and do not allow to make high load of Kalk powder.
But about Kalk compacting- is it a really problem?
Stepper motors are strong, maybe 7 years before I had a Deltec Kalk stirrer with a spepper motor mixer and had no issue, even driver(not motor) was extremely weak, but its common problem of poor engineering.
Its enough drivers nowadays that can provide 30w+ power on cold start and keep motor cold during continuous work.
Jagshemash!
Actually I'm thinking exactly about this.If you stir more or less continously - it should not compact. It only compacts if you leave it unstirred for a few hours..
You don't need to wait for long, as long as you are not dosing Kalk slurry - small suspended parts in the solution are not an issue in terms of potency or accuracy of dosing. Also slow mixing (something that cannot be achived with magnetic stirrers) would keep "cloudy" part to the bottom and the top part is relatively clear - then it's easily dosed.Actually I'm thinking exactly about this.
Mixer with enough volume for full day:
1)In the morning turn off the dosing
2)Fill with the mixer with RO water
3)Stire for 1 houre, let it settles for 3h hours.
4) Slowly dose all day
So Kalk will be all time extremely transparent and fully saturated.
In my view dosing cloudy Kalk has to much disadvantages.