Dr. Tank - #3 CO2 Fertilizer

If you want to experience the explosive growth and vibrant colors of a high-tech planted tank but aren’t ready to deal with pressurized cylinders or complex tubing setups, Dr. Tank #3 CO₂ Fertilizer Tablets are your shortcut to success. These clever, effervescent tablets drop straight into your aquarium and fizz for about 20 minutes, releasing a rapid cloud of pure carbon dioxide directly into the water column. 

Key Features & Benefits

• An extended-release inorganic carbon source dissolves slowly into the water to feed your plants long after the initial tablet disappears.
• No high-pressure cylinders, solenoids, or specialty plumbing lines are required to start boosting your photosynthesis rates.
• A highly economical formula ensures a single bottle of tablets treats up to 650 total gallons (2,500 liters) of aquarium water.

Dosing & Application Guide

For the best results, drop the tablet directly into an area with high water flow (like right near your filter's output nozzle or powerhead) to distribute the dissolved carbon evenly across your aquascape.

Can be used as a standalone carbon source or alongside a pressurized CO₂ regulator system

What’s in the Box?

• 1x Bottle of Dr. Tank #3 CO₂ Fertilizer Tablets (In your choice of 50 or 100 count)