Filter Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All Quickview SO Hydro-Logic Small Boy Sediment Filter – Poly Spun $17.95 Add to cart Quickview 29 % Save $1.00 Green Gold Medium Round Air Stone $2.49$3.49 Add to cart Quickview 34 % Save $1.60 EcoPlus Medium Round Air Stone $3.09$4.69 Add to cart Quickview 24 % Save $1.54 Air Stone 12″ – 30 cm $4.95$6.49 Add to cart Quickview 23 % Save $14.00 Aqua Heat Titanium Heater 300 Watt $46.95$60.95 Add to cart Quickview 20 % Save $1.00 Air Stone 6″ – 15 cm $3.95$4.95 Add to cart Quickview 8 % Save $4.00 SO Electromagnetic Hunter Valve 1″ 24 V $45.95$49.95 Add to cart Quickview 29 % Save $2.30 EcoPlus Large Round Air Stone $5.59$7.89 Add to cart Quickview 21 % Save $301.00 Hydro-Logic Evolution RO1000 High Flow System $1,109.95$1,410.95 Add to cart Quickview 21 % Save $17.00 SO Evolution-RO ChloraShield $62.95$79.95 Add to cart Quickview 24 % Save $73.00 SO Hydro-Logic Evolution RO1000 Membrane $231.95$304.95 Add to cart Quickview SO Ideal H20 RO Membrane – 600 GPD $299.95 Add to cart