JBL The 7+13 Balls are pressed fertilizing pellets, enriched by a special process with all the nutrients vital for aquatic plants, especially iron and trace elements. The nutrients are released slowly, providing a very favourable depot effect.
The ball shape permits the convenient use in existing freshwater-aquariums. Specially suitable for the specific nutrient supply or post-fertilization of aquatic plants which mainly absorb their nutrients through the roots, such as echinodori, cryptocory-nae, and others.
Depending on size of the aquatic plant, press one or more balls into the ground around the roots. Repeat after one year.
All In One External Filter
How to use:
$29.50External design, save space and keep the tank neat. Easy assembling to connect with canister filter. With high quality of ceramic diffusing tube, assures the best diffusing effect. With transparent chamber, visible to check water flow and speed of CO2 diffusing through internal impeller. Assembling design for cleaning and replacing ceramic easily.
New V shape design prevent CO2 pipe to be bended.