Air stone 50mm ball shape to take 3mm hose 1 × £3.69
Extension tube rigid Black 30cm long. M/M threads, 1/2 inch BSP 1 × £5.54
Silicone airline tubing CLEAR, internal bore 3mm. We will cut this to the continuous length you require (whole metres only - maximum reel length 100 metres). Price shown is per metre. Silicone tubing is recommended for use with air pumps. 1 × £0.88
Check Valve to take 3mm hose see 2559 above 1 × £5.78