iAVs – Easy!

We keep saying that iAVs is simple to understand and easy to build and operate. Here’s iAVs in  5 steps (images not necessarily to scale). Click on images to enlarge Proportions depending on loading (fish density and feed rates), Simple doesn’t have to...

The 5 Gallon Bucket Tests

iAVs is sand……and sand – at its most productive – is iAVs. But not just any sand will do. iAVs sand has 3 essential characteristics: It must be inert – that is it is not chemically reactive. It must be free of silt and clay. It must drain...

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