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Old 10/25/2020, 03:30 PM   #1
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Join Date: Aug 2020
Location: Gulf Coast of Florida
Posts: 26
Do skimmers remove calcium and alk chemicals?

I have a doser that is dosing Reef Pro A, Reef Pro B and Algae Management chemicals.

I have them dosing into chamber #2 in my sump. Chamber #3 is where my protein skimmer lives and Chamber #4 is the return pump.

Should I be dosing to chamber 4 instead of 2?

Wasnít sure if protein skimmers take those chemicals out and Iím basically wasting my time with the order of where things are going.

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Old 10/25/2020, 09:07 PM   #2
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Join Date: Feb 2006
Location: Spokane WA
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No. Skimmers remove amino acid leftovers, aka protein waste, aka that romantic 'sea foam' that reefers know better than to play in. Corals absorb calcium.


Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge, chromis, royal gramma basslet, tailspot blenny, ocellaris clown, yellow watchman, chestnut turbo snails, bristleworms, couple of hermits.
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Old 10/26/2020, 06:54 AM   #3
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Join Date: Apr 2008
Location: Grove City, Ohio
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As Sk8r said, no, your skimmer will not remove your Calcium or Alkalinity supplements. I would, however, suggest dosing in the return pump chamber if for no other reason than to minimize precipitation (especially Alk) on your skimmer impeller.

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Current Tank Info: 120 mixed reef with 40b sump, RO 150 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, BM curve 5 skimmer
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