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Water Chemistry

Alk, Ca, Mg, nitrate, phosphate, dosing.

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PinnedWater Chemistry
@ktran
May 20, 2026»

Welcome to #Water Chemistry - Alk, Ca, Mg, nutrients, dosing

Test results, dosing schedules, balling vs two-part vs reactors, nutrient management - this is the forum. Posting tips: - Include your test

Water Chemistry
@Drexl
16@BackbayReefSaturday at 10:17 AM»

Great vid about phosphate/phosphorus

I have prb 700lbs of rock and those biobricks but considering my fish load, NO3 can be elevated. It used to be 150ppm last year w/o the sulf

Water Chemistry
@IvanW
7@Pandoras_BoxOct 6, 2026»

What is your pH and how to keep it above 8

It is a Biocube so the closed system doesn't have an opening to add an auto dosing unit. I have been dosing with sodium bicarbonate to slowl

Water Chemistry
@BackbayReef
12@BackbayReefSep 30, 2026»

What’s your salinity?

My salinity probe is sitting in a calm area of the sump, not aware of bubbles & turbulence…

Water Chemistry
@BackbayReef
17@BackbayReefSep 15, 2026»

Chasing pH or Alk (or Both)?

As an update - I’ve been dosing Kalk at night for 12hrs through the K2 at 10mL/min (need need to go higher). Lowest pH was 7.99 and now it’s

Water Chemistry
@Cereous
4@janiners305Sep 7, 2026»

RowaPhos Dosing

Good to know! LC wasn't something I personally knew about back in 2016-2018...I have heard good things about it this time around, but just h

Water Chemistry
@BackbayReef
33@Fog_King_ReeferSep 3, 2026»

What do you dose?

Very nice! I think we need another Forum section for Temperate or other uncommon tanks.

Water Chemistry
@BackbayReef
12@janiners305Sep 2, 2026»

Forgive me, Father, for I have sinned…

Good to know. Thank you! I will ask hubby about the warranty. I think we got this one from a warranty swap last year, but my memory is garba