Off-Grid Aquaculture Pond Guide

Used in

• Chapter 10 The Water

The rows that check it

• 4 confirmed
• 2 partly confirmed
• 0 marked for safety

• E29 confirmed FAO pond tables: 400–600 m² pond 1.00 m water, 0.30 freeboard, 0.80 top, 2:1 slopes; settlement 5–20 %, built 15 % higher; core trench 0.5–1.0 m wide, 0.3 m into firm ground, …
• E30 confirmed Ribbon test (< 2–3 cm sand, > 5 cm clay) and overnight ball test
• E31 partly confirmed Brandenburg ponds freeze most years, 20–30 cm in a hard winter about one in five; water densest at 4 °C; carp overwinters in mud at a few heartbeats a minute; suffocates under ice …
• E32 confirmed Deep hole 1.5–2 m at the outlet; household pond 500 m² at 1 m with 2 m at one end
• E33 confirmed Summer: shallow Brandenburg pond > 25 °C in July; dawn oxygen minimum; carp gulping at the surface at dawn as the sign; cyanobacteria > 30 °C
• E34 partly confirmed Natural production of an unfed carp pond 100–300 kg/ha/yr in this climate, low end on sand; grain feed 3–4 kg per kg gain gives 30–40 kg from 1,000 m²; family eats ~50 kg whole …

In the Index

Fish Water