Flourish vs NilocG Thrive: identify the exact Thrive formula
By Richard James · Manufacturer sources checked · 28 October 2026
Jump to a section
Quick answer
Standard Thrive, ThriveS, Thrive+ and ThriveC are different named formulations. This page compares standard Thrive’s published nutrient role and directions with Flourish; a ThriveS calculator cannot stand in for every bottle.
Read the current standard Thrive page
NilocG’s current standard Thrive page gives 1 mL per 5 gallons, one to three times weekly depending on the aquarium. It describes macro and micronutrients. Match your bottle and market; do not resurrect an old pump assumption when measuring from a current cap.
Why the variant matters
| Identity | Limit of this comparison |
|---|---|
| Standard Thrive | The named all-in-one product discussed here |
| ThriveS | Separate shrimp-focused formulation |
| Thrive+ / ThriveC | Separate products with their own directions |
Which tool is available here?
Flourish calculator is available. The ThriveS calculator applies only to ThriveS. We have not enabled a standard Thrive calculator, so do not choose ThriveS just because the dose looks similar.
Cost and nutrient comparisons
Compare the stated analysis and intended routine, not just bottle price, pump count or iron percentage. This review does not establish a growth-speed winner or permission to combine full routines.
Keep the result in context
Use actual water volume and the exact schedule. Do not equate the liquid millilitres with active nutrient mass. Read units and concentration and schedule changes before comparing a daily and weekly routine.
Sources and check scope
- Seachem Flourish
- NilocG standard Thrive current directions
- NilocG ThriveS identity and separate directions
Sources checked 28 October 2026. Manufacturer product information and scoped instructions; no independent efficacy or clinical review. This source check was assisted by AI; it is not an independent human expert or veterinary review. Match the exact pack and consult its manufacturer if directions conflict.