The original liner material for the troughs that we used in our first systems in 2007 (which is already approved for organic certification by Oregon Tilth) is a 23-mil, 3-layer, 15-year laminated LDPE material [Read more…]
This is why we don’t build the troughs “up off the ground to avoid bending over when working”. [Read more…]
How to determine if your troughs need additional airstones: You can determine if you need aeration in your troughs by measuring the DO going into the trough, and comparing it to the DO going out, but the system must have mature plants [Read more…]
If you don’t feel like reading this whole post, and just “want the facts”, here they are: If the water exiting your fish tank has a DO of 5 or above, you’re good. If the water exiting your troughs has a DO of 4 or above,
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