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Dennerle Carbo Bio CO2 Depot Refills

Dennerle Carbo Bio CO2 Depot Refills - Main image
$8.9 $14.13 In stock

Category: Aquarium Fertiliser

Dennerle Carbo Bio Depot — Replacement Bio CO₂ Cartridges

Keep your planted aquarium’s CO₂ supply steady and your plants thriving with Dennerle Carbo Bio Depot replacement cartridges. These bio-activated CO₂ depots are designed to work with Dennerle bio CO₂ systems, providing a consistent release of carbon dioxide to support healthy plant growth, vibrant colours, and strong root systems without the complexity of pressurised CO₂ setups. Each cartridge uses CO₂ Constant Gel made from renewable raw materials that produces a steady stream of CO₂ over an extended period.

Key Features

  • Replacement cartridges for Dennerle bio CO₂ systems
  • CO₂ Constant Gel from 100% renewable raw materials
  • Provides steady CO₂ production for at least 40 days per depot
  • Supports faster plant growth and healthier aquariums
  • Compatible with relevant Dennerle CO₂ kits
  • Easy to install and swap out when depleted
Model Pack Size Compatible With CO₂ Duration
Carbo Bio Depot Double Pack (60/80) 2 cartridges Carbo Bio Start 60/80 bio CO₂ kits ~40 days each
Carbo Bio Depot 120 1 cartridge Carbo Bio Style 120 bio CO₂ kits ~40 days
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Customer Reviews (5.0 / 5 · 4 reviews)

Harper P. ★★★★★

Setup was straightforward—just swapped the old cartridge and within a day the CO₂ bubbles were consistent again. My crypts have visibly perked up, so these refills deliver exactly what they promise.

Harper ★★★★★

Exactly one month in and my plants are still pearling nicely with no drop in CO₂ output. Much easier than refilling a canister.

Victoria ★★★★★

Swapped out the old cartridge and my plants started pearling within a few days, just like they did with the first one. No mess or fuss installing it, either.