Arka myAqua190 – Reverse Osmosis System (up to 190 L/day) oil film remover allowing liquid fertilizers from a

allowing liquid fertilizers from a dosing pump to be evenly distributed throughout the aquarium via the filter flow

Copper (Cu)

The biological stage is where your nitrifying bacteria colony lives — over-cleaning it on every visit is one of the most common ways aquarists accidentally trigger a mini-cycle and see an ammonia or nitrite spike days later

This avoids mix-ups if you ever move bottles between systems or help someone else troubleshoot their dosing setup

no separate unit needed

Arka myAqua190 – Reverse Osmosis System (up to 190 L/day) oil film remover allowing liquid fertilizers from aThe Arka myAqua190 is a compact reverse osmosis system producing up to 190 litres of pure, mineral free water per day. Designed specifically for aquarium use, it removes chlorine, chloramines, heavy metals, nitrates, phosphates, and virtually all dissolved solids giving you a clean, controllable water baseline for planted tanks, discus, shrimp, and sensitive biotope setups. RO water is the foundation of precise water chemistry. With a myAqua190 you