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TANK DECODED
Illustration of a Seachem Flourish Tabs pouch next to a planted aquarium with cryptocoryneIllustration
Plants · Root tabs

Seachem Flourish Tabs, taken apart

Ten slow-release tablets that feed rooted plants from the gravel, not the water.

10tabs
In the pack
3g
Each tab
3–4months
Then replace
View on Amazon UK What works and what doesn't

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Taken apart

Every part

Illustration of the pack taken apart: pouch front, pouch back with directions, and ten grey-black tablets
Illustration recreated from the official product photos. Not a product photo.
The verdict

Works / doesn't

What works

  • Nutrients go straight to the root zone, not into the water column.
  • Time-released: one dose lasts three to four months.
  • Nothing to measure: one tablet per spot. Seachem calls it a gravel bed supplement for the planted aquarium.

What doesn't

  • More tabs isn't better: the pack says one per 10–15 cm radius.
  • In very soft or unbuffered water the tabs are slightly acidic, like peat moss.

Care

  • Push each tab midway into the gravel bed.
  • One tab for every 10–15 cm radius of gravel bed.
  • Replace every three to four months.
Specs

The numbers

Contents10 tablets, 3 g each
Dose1 tab for every 10–15 cm radius of gravel bed
PlacementPushed midway into the gravel
ReplaceEvery three to four months
NutrientsIron, manganese, magnesium, calcium, potassium and other nutrients, time-released
pHWill not alter pH; slightly acidic in very soft or unbuffered water
View on Amazon UK
Sources

Where this comes from

From our TikTok post “Feed the roots, not the water”. How we review.

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