System used for the total darkening of fish breeding pool, made of PVC / Polyester fabric of German origin, generating a black out effect to produce total dimming inside the ponds. Sealed by a perimeter system, doors and windows of access for fish feeding.

These tarpaulins for photoperiod are mounted on metallic meccano structure self-supporting, chemically galvanized and fixed to the pool, leaving a closed system of excellent quality; additionally and at the client's request we can develop, manufacture and install the structure.