- Design and materials for cages

March 19, 2008

We want to share ideas and experiences in design and use of cages for fish and crustaceans to the open sea, especially in tropical conditions (with a lot of joking or "foul") and the lowest possible cost (despite being sacrificed durability).
For now postulate three materials we're using and testing their durability:
PVC-pipe covered with gelcoat (which is especially exposed on the surface) to prevent the cracking that produces ultraviolet radiation. PVC allows wonders, but it is not the best material for sites with currents. Let's try soon PVC pipe for irrigation, which is a little more expensive but has been treated against UV radiation. The cage of PVC needs some time to adapt well to flotation, which is reached when the grid gets wet and accumulates that beats jest, that's when you need to finish putting floating units, we use plastic pichingas or botellón 15 to 20 liters.
Rod-iron construction. The most inexpensive and very resistant. We have to treat it well against rust, but it is achieved. The point of using this material is available everywhere, any welder does the work, and is highly resistant to sites with currents. One advantage of the cages of iron rod that is submerged can be used even in the background. The flotation is important for a small cage (say, 2 or 3 meters in diameter if round) will occupy approximately eight pichingas of 20 liters, or moored.
-Wood or bamboo. This material has little time but can be used if available, especially bamboo.
WAIT FOR YOUR COMMENTS.

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