Review my Implantation of a Kalk Reactor (Via MasterFlex)

biglurr54

New member
Background: My tank is a 175g cube with mixed reef but primarily SPS. I am currently dosing 135 ml of alk and ca (BRS 2 part) I have high light (400w Halide 17.5k bulb and RB and UV LED Supplement) and I have high flow (2 xf250s and 2 mp40s and 2000 gph return) With all this light and all this flow, I keep params high (alk 10 ca 450). My plan is to dose saturated Kalk and have a Calcium reactor take care of the rest.

The plan: I am beginning stage 1 of the calc alk plan which is to get a Kalk Reactor going. I got a Geo Kalk Reactor 618 for a reactor, a Cole Palmer 7520-00 driver, 7518-00 head, and 1/16 tubing. My tank evaporates approximately 1.5 gallons a day. I will use BRS Kalk. My plan is to have the mixing pump and masterflex hooked up to the APEX. The mixing pump will turn on for 1 minute every 4 hours. When the mixing pump is on, the apex will turn off the masterflex and keep it off for 10 minutes to allow the mixture to settle, then it will resume the schedule.

The math: 1.5 gallons is approximately 5700ml/day. There are 1440 minutes each day. The dosing pump will be off 11 minutes 6 times a day so the dosing pump will run for 1374 minutes every day and it will need to dose 4.15ml per minute it is running. I will set the pump to 19.75 revolutions per minute to achieve my goal. This can be adjusted up or down depending on my evaporation rate on the masterflex.

The goal: Hopefully this will account for the majority of my alk and calc demand. I will continue to use 2 part to make up what the kalk cant do. Once I begin dosing a lot of 2 part with the kalk reactor running, I will begin setting up a Geo 6x18 Calcium reactor of an identical masterflex driver and head but with the larger tubing.

Dose this look like decent set up? Any tweaks, changes, or words of wisdom?
 
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I've been using masterflex pumps for a long time to dose Kalk. I think you are on the right track however... I typically use float switches and dose kalk at the rate of evaporation and typically aim for 50-75% runtime on the pump.
 
My concern with going off the Eva rate is that it is variable and changes day to day. I would rather do a precise dose everyday and make up the little bit of extra evap with ato and make up the calc a snow all with two part. Then I know it's stable and predictable.

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I haven't found it to be much of an issue but I do operate one of my tanks that way but only because there is no baffles in the sump and the sloshing from the drain triggers the float switches on off on off on off all day every day. So I gravity feed that tank with a float from a small res that I fill each day based on time to fill. Then dose kalk at a steady rate. It definitely works. I say carry on!
 
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