Bio-Purge, Biofilm Control


If you are noticing that your diffusers are releasing fewer and fewer bubbles, then likely a biofilm is forming a coating that is restricting airflow by blocking the perforations.

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Regular price
$45.00 CAD
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Regular price
$45.00 CAD
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Bio-Purge is our leading cleaning/maintenance product for underwater air diffusion systems, including aeration discs and Bubble Tubing®. As with any aeration product, over time air diffusers and bubble tubing will benefit from a maintenance treatment to remove any calcium deposits or organic biofilm that may coat their surfaces and inhibit airflow.


    Bio-Purge is a maintenance product designed to clean aeration lines and diffusers. Biofilm develops slowly covering the small holes designed to release micro-bubbles of air. Factors such as temperature, water quality, water hardness, pH and air pressure all effect if or when a biofilm may form, which explains why there are instances when no biofilm develops, or biofilm develops rapidly.


    To counter this problem use Bio-Purge which is an environmentally friendly product to eliminate the bio-film or calcium deposits that may be hindering the efficiency of your aeration system. Similar in characteristics and effectiveness as such well known products as “CLR”, Bio-Purge is designed for use in drinkable water. It is certified ANSI/NSF, and is a

    product currently used in municipal water treatment reservoirs and is also recommended by Health Canada and the Ministry of Environment (MDDEP). Approved for use both in the US (CFR) and Canada. 

    Bio-Purge is safe for use in all aquatic environments. Bio-Purge replaces muriatic acid as an effective cleaner and declogger of airstones. Cleaning diffusers or cleaning airstones with diluted muriatic acid solutions is a thing of the past. 

    Beyond cleaning diffusers and tubing, Bio-Purge is an excellent dispersant/bio-penetrant specifically formulated to control iron, scale, bio fouling, and other filter related problems in potable or industrial water systems. Bio-Purge is a non-phosphate-based product that may be used in water systems to clear away oxidized metal build up, scale deposits, and when used in conjunction with a biocide, bacterial species from filter media.

    We guarantee that the product has been manufactured under strict quality control standards that ensure optimal product quality.

    SDS (PDF)


    Bubble Tubing® ½ I.D.: 1 liter per 100 ft of tubing

    Bubble Tubing® ¾ I.D.: 1.5 liter per 100 ft of tubing

    Membrane diffuser disc: 125 ml per diffuser


    Step 1:
    Disconnect the main airline(s) that leads to your diffuser disc, air stone or Bubble
    Step 2:
    Pour in an appropriate amount of Bio-Purge liquid into the airline(s).
    Step 3:
    Re-connect the main airline and turn on the compressor briefly to distribute the liquid
    into all of the diffuser discs, air stones or Bubble Tubing®.
    Step 4:
    Turn off your compressor to allow the Bio-Purge to completely dissolve the biofilm. This
    will be anywhere from 15 minutes to 1 hour.
    Step 5:
    Turn on your compressor. Your diffuser discs, air stones or Bubble Tubing® will be
    cleaned from the inside-out and will be once again performing at their optimal level.

    Complete Instructionss (PDF)

      Customer Reviews

      Based on 1 review
      Customer Barb
      Bio purge... works well!

      Our bubbler was clogged & barely working this spring. This product cleared it well and all is working properly again. Thanks again to this company for helping to keep out medium sized pond looking great.

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