CO2 & Fertilizers
CO2 and fertilizers fuel plant growth. Balancing them with light is the key to lush plants instead of algae outbreaks.
Best CO2 Regulators for Planted Tanks (2026)
Compare CO2 regulators for planted aquariums. Learn about single vs dual gauges, solenoids, and bubble control for stable, safe carbon dosing.
Best CO2 Systems for Planted Tanks (2026)
Compare CO2 systems for planted aquariums. Learn what to look for in regulators, cylinders, and control for lush, fast plant growth.
Best CO2 Diffusers for Planted Tanks (2026)
Find the best CO2 diffusers for planted aquariums. Learn how ceramic, inline, and reactor styles dissolve CO2 for even distribution.
Best CO2 Drop Checkers for Planted Tanks (2026)
Find the right CO2 drop checker to monitor carbon levels in your planted aquarium. Learn how color indicators keep your fish safe and plants thriving.
Best Liquid Fertilizers for Planted Tanks (2026)
Compare liquid aquarium fertilizers for lush plant growth. Learn about macro and micro nutrients, all-in-one dosing, and matching ferts to your setup.
Best Root Tabs for Planted Tanks (2026)
Discover the best root tabs for feeding heavy-root-feeding aquarium plants. Learn how substrate tablets support crypts, swords, and lush carpets.
Best Aquarium Plant Nutrients for Planted Tanks (2026)
Compare aquarium plant nutrients and dosing systems. Learn how macros, micros, and trace elements keep your planted tank green, dense, and healthy.
Best CO2 Tubing for Planted Tanks (2026)
Find CO2-resistant tubing for your planted aquarium setup. Learn why standard airline leaks gas and which materials keep injection pressure stable.
Best CO2 Bubble Counters for Planted Tanks (2026)
Compare CO2 bubble counters for planted aquariums. Learn how counting bubbles per second helps you dial in precise, repeatable carbon dosing.
Best Dosing Pumps for Planted Tanks (2026)
Discover automatic dosing pumps for planted aquariums. Learn how programmable pumps deliver consistent fertilizer doses so your plants never miss a feed.
How to choose
- Add pressurised CO2 for fast growth and carpeting plants.
- Monitor CO2 with a drop checker.
- Dose liquid fertilizers consistently.
- Use root tabs for heavy root-feeding plants.
Common questions
Do planted tanks need CO2?
Low-tech tanks with plants like ferns, mosses and anubias do well without it. Carpeting plants and fast stem plants benefit greatly from CO2.
What are root tabs?
Fertilizer capsules pushed into the substrate near rooted plants such as swords and crypts, feeding them where they absorb most nutrients.