Comments: Over the past thirty years I've tried about every air pump there is and in my opinion the Rena trumps them all.

These air pumps are quiet, efficient and with minimal care should last for many years. Like all air pumps replacing the intake filter with new ones is imperative for keeping vibration and noise at a minimum.

The 400 is perfect for tanks ranging in size from 55 - 160 gallons.

They're easily adjustable dual output ports let you configure just how much air you need to drive your aeration, bubble wands, walls, air stones, sponge filters, power heads and so on.

The 400 hundred is the largest in the line and like all Rena pumps their curved design and expansion chambers keep vibration and noise to a minimum.

Replacing the diaphragm is easy to do on these pumps - just remember to buy two replacement kits - one for each intake port.

Quick Specs:

1) Powerful

2) Dual out put

3) Dual control Valves

4) 3 Year warrantee

Like any quality air pump keeping a drip loop and using check valves in your air line tubing is essential.

Add the mix changing the air filter from time to time and the Rena will reward you with years of efficient trouble free service.