Reef nutrition

Pressurized kalk reactor

CaseyP said:
Testing the pH difference between a bucket of freshly mixed saturated kalk (12.4 pH) and my avast kalk stirrer (11 pH). The stirrer still has a lot of kalk at the bottom which makes it very deceiving regarding its potency.

Already a 0.2 difference and that's at 75% of the dosing volume of the stirrer. I'm about ready to ditch the stirrer and figure a way to route a line outside so I can store a 55 gallon drum of saturated kalk.

View attachment 61046
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This was pretty much my conclusion after messing around with two different reactors. After this frag tank the next project is to set up a kalk drum in the garage and run a RODI line along with the AWC lines.
 
I'm not sure this is being asked, but how are you loosing 3 dkh a day? Didn't you loose most of your coral in the crash?
 
If anyone interested, here's the part list this project. I already have Hydros control , but any control ecosystem should work. You also need any dosing pump for the actual kalk dosing. I used Kamoer X1 .

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HYDROS Float Switch Sensor with Magnetic Mount

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ph low-high without kalk - 7.5 to 7.8
After dosing - 7.9 to 8.0

I’m only dosing at night.

From the limited info i read, ph 7.5 is unlikely and likely a probe issue. I calibrated the probe 2 months ago.
 
newfly said:
ph low-high without kalk - 7.5 to 7.8
After dosing - 7.9 to 8.0

I’m only dosing at night.

From the limited info i read, ph 7.5 is unlikely and likely a probe issue. I calibrated the probe 2 months ago.
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Alk is 8.2 to 8.3 range. I should also mention I measure twice a day at 7am and 7pm
 
@newfly are you adding fresh kalk with every water refill, or leaving a lot undissolved kalk to mix in with fresh water? Are you testing that it's not fully saturated? I'm also playing around with some ideas so your findings are helpful.
 
CaseyP said:
@newfly are you adding fresh kalk with every water refill, or leaving a lot undissolved kalk to mix in with fresh water? Are you testing that it's not fully saturated? I'm also playing around with some ideas so your findings are helpful.
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I’m adding fresh kalk once a week. Plan to move it to once every 2 weeks . Not every water refill. In my setup, water refill everyday so manually adding kalk defeat the purpose of automation.

I’m not testing for saturation. My comparison baseline is based on my old setup where I mix a big batch enough for 5-6days. My ph and alk is appropriate the same with the old setup versus this new setup.
 
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