CO2Art – Planted Tank CO2 Experts

Cloudy tank water? Overfeeding, a new tank still cycling, or a dirty substrate are the usual causes 💧 co2art.eu/blogs/blog/how-to-… #aquariumtips #plantedtank

No algae eater fixes the cause 🤫 Healthy plants + steady CO₂ keep algae away. co2art.eu/blogs/blog/best-al… #aquascaping #plantedtank

Algae in your tank? Usually it’s a balance problem 🌿 co2art.eu #aquarium #plantedtank

Orange shrimp on a food hunt through the plants 🧡🦐 co2art.eu #aquascaping #plantedtank

Moss on wood makes a tank look natural. 🌿 Attach it to wood or rock, don’t bury it, and give it light and clean water. co2art.eu/blogs/blog/the-nat… #Aquascaping #Moss

Plants release oxygen in the light, even Anubias in low light. 🌿 At night they use it, so keep the water moving. co2art.eu/pages/how-a-co2-sy… #PlantedTank #Anubias

Those bubbles on your plants are not a trophy — they are a receipt. Pearling starts when the water can hold no more oxygen, usually hours into the photoperiod. You cannot force it with the needle valve: it is what a settled tank does on its own. #plantedtank #aquascape

If you filled your drop checker with tank water, it is not reading CO2 — it is reading your KH. The colour scale only works with 4dKH solution: the known KH is what turns the reading into a CO2 level. Green is right, blue low, yellow high. #plantedtank #dropchecker

How many drop checkers does a planted aquarium need? Size, number, placement, whether you need one at all — the guide answers the questions most people ask first. co2art.eu/blogs/blog/drop-ch… #plantedtank

The lower leaves on your stem plants are not short of CO2 — they are in the dark. A dense group shades its own base. Trim the tops, let light reach down, and the bottom holds instead of melting. #plantedtank #aquascaping

Your CO2 cylinder holds liquid, not only gas — and liquid keeps the pressure up. So the high-pressure gauge reads nearly full right to the day it runs out. Weight is the honest number: weigh the cylinder and compare it with the empty weight stamped on it. #plantedtank

When the solenoid clicks off at night, the pressure in your CO2 line drops — and aquarium water can creep back up the tubing towards the regulator. A check valve stops it: in the line, arrow pointing at the tank. Go and check which way yours faces. #plantedtank

Most of the CO2 you inject leaves your tank at the surface, not at the plants. That movement is worth having: it carries oxygen in. Make it a ripple, not a churn, and expect the drop checker to sit bluer for a few days after you add flow. #plantedtank

Three weeks today, entries close for the Master's Aquascaping Poland Contest 2026. That is about the right gap between a trim and a photo: cut the stems now, let the new growth fill in, and hold the bubble count steady while it recovers. Trim this week, shoot the last.

Before you change anything in your planted tank, clean the front glass. The film builds slowly enough that you stop seeing it. Then you are judging plant colour and pearling through it. Wipe it, let the water settle, look again. #aquascaping #plantedtank

Your diffuser is not broken — it is blocked. A ceramic membrane fills with scale and biofilm, and gas takes the easy path: big lazy bubbles instead of fine mist. A soak in a bleach-and-water solution usually brings the mist back. Never scrub the membrane. #plantedtank #co2

The IAPLC 2026 final ranking lands on Saturday, Oct10th. The layouts near the top will share something dull: months of nobody changing anything: same photoperiod, bubble count, trim day. Pressurised CO2, run at one steady rate, for a year. Photo by our CO2artist - Naz S. #IAPLC

Your planted tank does not pearl at breakfast. Oxygen has to build up in the water first, and that takes most of a photoperiod — so an empty-looking tank at lights-on is normal. Judge it at hour six, not hour one. #plantedtank #pearling

Last weekend to enter the AGA International Aquascaping Contest. Entries close Sunday 4 October, and the new Classic category is built for plant-heavy layouts. If your scape is ready, the hardest part is deciding it is finished. 📸 dnoerholm #aquascaping #plantedtank

Colour, not a number: that is all a drop checker gives you. Bromothymol blue changes only across pH 6.0 to 7.6, and that band is your whole reading. Our drop checker guide is freshly updated: co2art.eu/blogs/blog/1359164… #plantedtank