Calculators – The Happy Reef

Shop

Guide

Visit

Red Sea G2+

For next-gen reefers

The Finest Corals

Fed, rested, and ready for your tank

Predator specialist

Live prey, rare specimens, no compromise

The Lab Advantage

In-house testing, handcrafted supplements, science you can see

Love the unusual

We stock what others don't

Live Reef Cultures

Nutrient rich, lab grown, and reef ready

The Finest Livestock

Online or visit us in store. We are located between Ashford and Canterbury on the A28

The Happy Reef

Stour Valley Business Park, Ashford Road, Kent, CT4 7HF

Find us on google maps

No Product Found

Ideal Parameters Calculator

1. What is your tank size (litres)?

2. What types of corals do you keep?

3. Do you keep invertebrates?

4. What is your fish stocking level?

5. Do you use a refugium or macroalgae?

Show advanced (trace element) targets

Dosing Calculator

Reef Zlements Trace Element Dosing Calculator

Enter your ICP results below. Only elements with ICP values will be calculated. You can adjust target values as needed.

Trace Element Inputs (Reef Zlements)

Iron (Fe) ℹ️
ICP: Target:

Strontium (Sr) ℹ️
ICP: Target:

Iodine (I) ℹ️
ICP: Target:

Manganese (Mn) ℹ️
ICP: Target:

Boron (B) ℹ️
ICP: Target:

Potassium (K) ℹ️
ICP: Target:

Molybdenum (Mo) ℹ️
ICP: Target:

Zinc (Zn) ℹ️
ICP: Target:

Vanadium (V) ℹ️
ICP: Target:

Nickel (Ni) ℹ️
ICP: Target:

Chromium (Cr) ℹ️
ICP: Target:

Lithium (Li) ℹ️
ICP: Target:

Cobalt (Co) ℹ️
ICP: Target:

Selenium (Se) ℹ️
ICP: Target:

Nitrate (NO₃) ℹ️
ICP: Target:

Phosphate (PO₄) ℹ️
ICP: Target:

Tank Volume (litres)

Salt Mixing Calculator

Saltwater Mixing Calculator

Mode:

Volume of Water (litres): Salinity Unit: Current Salinity: Target Salinity: Salt Brand:

Quick Conversion:
35 ppt = ~1.026 SG
33 ppt = ~1.024 SG
30 ppt = ~1.022 SG
Formula: SG = (ppt / 1000) + 1

Kalk Calculator

Kalkwasser Dosing Calculator

Calcium Reactor Calculator

Tank Volume Units

Litres Gallons

Alkalinity-Only Mode

Current Calcium (ppm)
Target Calcium (ppm)

Effluent Flow Rate (ml/min)
CO₂ Bubble Rate (bubbles/sec)

ICP Results Dosing Calculator

Reef Zlements Trace Element Dosing Calculator

Enter your ICP results below. Only elements with ICP values will be calculated. You can adjust target values as needed.

Trace Element Inputs (Reef Zlements)

Iron (Fe) ℹ️
ICP: Target:

Strontium (Sr) ℹ️
ICP: Target:

Iodine (I) ℹ️
ICP: Target:

Manganese (Mn) ℹ️
ICP: Target:

Boron (B) ℹ️
ICP: Target:

Potassium (K) ℹ️
ICP: Target:

Molybdenum (Mo) ℹ️
ICP: Target:

Zinc (Zn) ℹ️
ICP: Target:

Vanadium (V) ℹ️
ICP: Target:

Nickel (Ni) ℹ️
ICP: Target:

Chromium (Cr) ℹ️
ICP: Target:

Lithium (Li) ℹ️
ICP: Target:

Cobalt (Co) ℹ️
ICP: Target:

Selenium (Se) ℹ️
ICP: Target:

Nitrate (NO₃) ℹ️
ICP: Target:

Phosphate (PO₄) ℹ️
ICP: Target:

Tank Volume (litres)

PAR Estimator

PAR Depth Map with Light Types

Number of Lights:

Tank Width (cm):

Tank Depth (cm):

Mounting Height (cm):

0-40

40-80

80-150

150-200

200-300

300+

Treatment Calculator

Quarantine Dosing Planner

Tank Volume (litres): Select Medication: This tank includes sensitive species (e.g. wrasse, butterfly, large angels)

Redfield Ratio Calculator

Nutrient Ratio Calculator

Nitrate (NO₃) ppm: Phosphate (PO₄) ppm: Target Ratio:

Free Ammonia Calculator

Free Ammonia Calculator (Saltwater)

Ammonia Cycling Calculator

Ammonia Dosing Calculator

Tank Volume (litres):
Target Ammonia Level (ppm):
Ammonia Source:

Substrate Calculator

Tank Size Units:

Tank Length (cm): Tank Width (cm): Desired Substrate Depth (cm): Substrate Type:

Terms & Conditions
Privacy Policy
Refunds & Returns Policy
Shipping & Delivery Policy
Cookie Policy
Loyalty Programme T&C's
Ethical Livestock Policy

Shop

Guide

Visit

Fish Guide

Invertebrate Guide

Coral Guide

Reef Care Guide

Reef Calculators

Red Sea G2+

For next-gen reefers

The Finest Corals

Fed, rested, and ready for your tank

Predator specialist

Live prey, rare specimens, no compromise

The Lab Advantage

In-house testing, handcrafted supplements, science you can see

Love the unusual

We stock what others don't

Live Reef Cultures

Nutrient rich, lab grown, and reef ready

The Finest Livestock

The Happy Reef

No Product Found

Ideal Parameters Calculator

Reef Zlements Trace Element Dosing Calculator

Saltwater Mixing Calculator

Kalkwasser Dosing Calculator

Results:

Calcium Reactor Calculator

Reef Zlements Trace Element Dosing Calculator

PAR Depth Map with Light Types

Quarantine Dosing Planner

Nutrient Ratio Calculator

Free Ammonia Calculator (Saltwater)

Ammonia Cycling Calculator

Ammonia Dosing Calculator

Substrate Calculator