Blue Diamond Envir-o® ET Series Air Pumps

Blue Diamond


Note: The Blue Diamond ET series aerators are designed for relatively low pressure. Tubing should not exceed 130' and diffusers should only used in water up to 7' deep.

Blue Diamond ET Series Air Pumps are versatile pumps that can be used in aquariums, ponds and certain septic applications. The weatherproof pump has a robust and compact construction, and the main body is constructed of cast aluminum alloy.

  • Energy-efficient Green Drive Technology for low power consumption
  • Suitable for intermittent and continuous duty applications
  • Replacing diaphragm simplifies effective maintenance 
  • Specially formulated diaphragm material for extended life
  • UL and CE approved with a grounded 6' cord 

Air outlet is threaded inside for use with included barb adapter, but we recommend instead using the provided rubber elbow when connecting 3/8" tubing. Larger tubing may be connected directly to the smooth outer surface of the air outlet. 14mm outlet can accommodate 1/2" tubing, while 18mm outlet can accommodate 5/8" or 3/4" tubing. To use 1/2" tubing with 18mm outlet, you will need additional adapters.

On all models where the brass is used to connect to a septic pump alarm, the brass is 4mm.  

2 Year Warranty
This warranty does not include the diaphragm kits, which are a replaceable, wearable part (typically replaced every 12-18 months). Warranties are at the discretion of the manufacturer as to whether the damage is due to misuse or to defect.

The most common problem with this and other larger air pumps is premature diaphragm tearing due to excessive back pressure. People don't tend to understand how much air the large sized pumps produce. If an air pump is powering too small of a diffuser or too few outlets, excessive back-pressure can occur. The solution is to add a tee with a ball valve or other "bleeder valve" so that excessive air can be bled off into the atmosphere. Start with the valve completely open and slowly close it until you have the maximum output from your air diffusers without unnecessary back pressure

Model Startup Power Performance Outlet Noise Weight Dimensions
ET30 30W 25W 30Lpm
@ 0.15 bar
14mm (0.55") Slip;
10mm (0.39") Barb
40dB 4.0kg 8" x 6" x 7"
ET40 55W 30W 40Lpm
@ 0.15 bar
40dB 4.3kg 8.5" x 6" x 7.5"
ET60 85W 55W 60Lpm
@ 0.17 bar
18mm (0.71") Slip;
12mm (0.47") Barb
45dB 6.0kg 8" x 6.5" x 6"
ET80 105W 75W 80Lpm
@ 0.1 bar
45dB 7.0kg 85" x 75" x 7"
ET100 125W 80W 100Lpm
@ 0.1 bar
45dB 8.5kg 9.5" x 8" x 7"
ET120 125W 90W 120Lpm
@ 0.1 bar
45dB 9.5kg 10.5" x 8.5" x 8"
ET150 130W 130W 150Lpm
@ 0.15 bar
45dB 9.0kg 10" x 8" x 9"
ETD150 14" x 8.5" x 8"
ET200 160W 160W 200Lpm
@ 0.15 bar
46dB 9.0kg 10" x 8" x 9"
ETD200 14" x 8.5" x 8"

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