hard airline

  1. BloopFish

    Phytoplankton Culture Tube Diameter

    I wanted to improve my phyto setup and I was hoping to improve my setup. I was watching a video and a guy stated that you can snugly fit a 1/4" tubing over a hard 3/16" air line tubing. However, what I don't quite understand is if 1/4" airline tubing would actually fit on a standard Tetra...
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