MarineDepot.com Education Center - Reef Aquarium Chemistry Calculator

1. Choose your calculator

2. Enter your water volume

Total System Water Volume:

3. Calculate your levels

Current Calcium Level: ppm

Desired Calcium Level: ppm

Select product:
Keeping your reef tank parameters in check is essential to the health and vitality of your aquarium. Doing so can be accomplished a number of different ways. Most commonly reef aquarium owners use a combination of water changes, filtration and supplementation to get and keep their water conditions at stable levels that replicate the conditions in a natural ocean reef.

The frequency in which reef aquarium hobbyists change their water varies, although weekly, bi-weekly or monthly are most common. The more challenging aspects of maintaining pristine water conditions in a reef tank have more to do with filtration and supplementation. Specifically, how often should one replace their filter media and how much and how often should one dose aquarium supplements ?

Our Reef Aquarium Chemistry Calculator helps eliminate the guesswork associated with media changes and dosing. Here is how it works:

  1. Select a water parameter (Calcium, Alkalinity or Magnesium) or filter media (carbon or GFO ) from the drop-down menu.
  2. Enter some basic information about your reef tank.
  3. Click the Calculate button and our reef calculator will tell you how much supplement to dose or media to change as well as provide instructions on how to carry out the task.
If you have questions, contact us! We are happy to help you use our aquarium calculators as well and offer a plan of action to help rid your reef of dirty water or nuisance algae and create ideal living conditions for fish, corals and inverts.