Active Aqua 6" Air Stone - Case of 12

A 6" air stone requires a pump with sufficient output to push air through the micropore structure against the water pressure at your reservoir depth. For multi-stone setups, you can distribute airflow using an Active Aqua 12-Outlet Metal Air Manifold. As a general guideline, match your air pump's output to the total stone surface area and reservoir volume — larger reservoirs and deeper water columns require higher-output pumps.

Air stones gradually clog with mineral deposits and biofilm over time, reducing bubble output and aeration efficiency. In most systems, replacing air stones every 3–6 months is a good maintenance baseline — or sooner if you notice a significant drop in bubble production. Buying in a case of 12 ensures you always have replacements on hand without interrupting your grow cycle.

Yes — the 6" Active Aqua Air Stone is well suited for deep water culture (DWC) buckets, recirculating systems, and larger reservoirs where consistent dissolved oxygen is critical. The 6" length provides broad bubble coverage across the reservoir floor, making it effective in both single-bucket DWC setups and centralized reservoir configurations serving multiple sites.

Soak the air stone in a diluted hydrogen peroxide solution (3%) or white vinegar for several hours to dissolve mineral buildup and kill biofilm. Rinse thoroughly with clean water before reinstalling. If bubble output doesn't recover after cleaning, the micropores are likely permanently blocked and the stone should be replaced — given the case-of-12 format, keeping fresh units on hand makes this straightforward.

Active Aqua air stones are available in multiple formats, including the Active Aqua Round Air Stone - 4" x 1" and the Active Aqua Cylindrical Air Stone - 2" x 2". The 6" stone in this listing is an ideal option for mid-to-large reservoirs and DWC systems, while smaller sizes are available for compact setups or smaller buckets where space is limited.

Aeration can have a minor effect on pH over time — CO₂ off-gassing from actively aerated solutions tends to gradually raise pH, which is worth monitoring during longer reservoir cycles. EC (electrical conductivity) is not directly affected by aeration itself, though the extended solution life that comes with better oxygenation means you'll be topping off and adjusting less frequently. Regular pH and EC checks remain standard practice regardless of aeration setup.