What is a rubber membrane diffuser? (video below) The diffuser part of the phrase is when a volume of air is broken down into smaller volumes of air. Sort of like a watering vase. There is the main storage area holding water and when poured out the spout it reaches small holes diffusing the water into smaller drops.
Rubber membrane diffusers have been around for some time now and used for pond aeration. They are what is used in new pond aeration system and to replace the old school stone diffusers that can plug up so quickly. Depending on the water quality of the pond the stone diffuser can plug up or need cleaned in as little as 2 weeks. Cleaning the stone diffuser or air stones generally use muriatic acid or as little as water and a brush being careful not to break the stone.
Rubber membrane diffusers offer easier cleaning which can be done right at the air compressor or if need be brought up to the surface and gently rubbed by hand or gloved hand.
Here at WhatPond we did start out using an air stone diffuser and yes it clogged up, took a few month but ended up tossing it instead of cleaning it and the second one broke during the cleaning process.
Once we got our proper sized aeration system it came with the rubber membrane diffusers. The bubbles where even
smaller than the stone diffusers, which is good because the smaller the bubble the more water it entrain into the bubble column.
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what are the dimensions of the rubber membrane diffuser? what size holes in the membrane?
It is called 6″ long with a 1/2 NPT the hole are a half mm. We are currently testing another material with different size holes and should have results once the ice melts off next spring. If you need any more details on the diffuser please let me know.
Darrell
can these be used in the winter to keep water from freezing???
Yes, The aeration systems are used to keep a hole in the ice to allow toxic gasses to escape during winter and provide oxygen and circulation during the summer months. Winter Aeration and further information on aeration you can either start with proper sized aeration or use the search option on the top of the website. There are plenty of manufacturers for aeration systems and we are here to help calculate and design a system for your pond if you wish.