Biosecurity to prevent AHPND in the first 30–35 days after stocking shrimp
AHPND usually kills shrimp within 30–35 days of stocking. How to prepare water, choose and nurse postlarvae, feed and test for Vibrio to cut early deaths.
Shrimp farming knowledge
Technical guides from the Noben team, based on field work with Vietnamese shrimp farms and international references: disease recognition, water quality, minerals, lined ponds and farm economics.
How to measure and read shrimp pond water parameters: pH, alkalinity, oxygen, NH3, NO2, H2S, transparency
Measure shrimp pond water at the right time and place, then read pH, alkalinity, DO, NH3, NO2, H2S and transparency against QCVN 02-19:2014 and keep a log.
Costs and profit of a whiteleg shrimp crop in lined ponds: how to calculate the cost per kg of shrimp and the break-even point
Lined-pond whiteleg shrimp costs: feed, PL, power, chemicals, labour, depreciation. Research data, cost per kg from FCR and survival, break-even.
Minerals for shrimp farmed at low salinity: balancing potassium, magnesium and calcium by salinity
Low-salinity shrimp ponds often lack potassium and magnesium even with adequate alkalinity. How to calculate seawater-equivalent Ca, Mg, K and the Mg:Ca ratio.
NH3 and NO2 in lined ponds: understanding nitrification, pH, temperature and salinity for control
The same ammonia level becomes many times more toxic as NH3 at high pH and temperature. Nitrification, an NH3-by-pH table and why NO2 is worse at low salinity.
Shrimp farming in the rainy season: preventing pH shock, alkalinity drops and algae crashes, and what to do before, during and after heavy rain
Rainy season shrimp ponds risk pH shock, alkalinity and salinity drops, algae crashes and low bottom oxygen. How to manage ponds before, during and after heavy rain.
Shrimp farming in hot weather: managing high temperature, oxygen, algae, salinity and feeding times
Shrimp farming in hot weather: water above 32°C lowers oxygen, algae bloom then crash, salinity rises. How to shade ponds, keep water deep, aerate and adjust feeding.
White feces syndrome (WFS): telling apart Vibrio, EHP, gregarine causes and how to test
White faecal strings floating in the pond may come from Vibrio, EHP, gregarines or sloughed hepatopancreatic microvilli. How to examine and test samples to find the cause.
Benthic algae, lab-lab and slimy algae in shrimp ponds: causes, harm and how to deal with them
Lab-lab, benthic and slimy algae grow when shrimp pond water is too clear. Causes, toxic gas from dying mats, prevention by colouring water, safe treatment.
EHP PCR testing and clearing EHP spores during shrimp pond preparation
Which samples to send for accurate EHP PCR testing, why microscopy easily misses it, and how to use quicklime (CaO) and bottom drying to cut EHP spores before a new crop.
Atrophied, white or pale hepatopancreas in shrimp: causes and how to restore it
A shrunken, pale, white or swollen waterlogged hepatopancreas makes shrimp eat poorly, grow slowly and die sporadically. How to check it, common causes and liver support steps.
How to apply minerals for shrimp at the right time and dose: pond-applied and feed-mixed minerals
Mineral guide for whiteleg and black tiger shrimp: macro and trace minerals, Ca, Mg, K ratios, night-time application, doses by stage and common mistakes.
High-density whiteleg shrimp farming in lined ponds for consistent yields
Lined ponds control the bottom and disease better than earthen ponds. Tips on pond design, stocking density, siphoning, liner slime, minerals and oxygen.
Managing pH and alkalinity in shrimp ponds: standard ranges and how to adjust them
pH and alkalinity govern moulting, shell hardening and gut health. Ranges for whiteleg shrimp, raising alkalinity, lowering pH and fixing post-rain swings.
How to treat toxic NH3, NO2 and H2S in shrimp ponds effectively
Toxic NH3, NO2 and H2S silently harm shrimp. Safe thresholds, warning signs and treatment with probiotics, yucca and zeolite for earthen and lined ponds.
EHP microsporidian disease in shrimp: why shrimp grow slowly, vary in size and how to prevent it
Shrimp eating well but not growing, uneven in size, with white feces? The pond may have EHP. How to recognise, test for and prevent EHP from pond preparation.
White spot disease (WSSV) in shrimp: signs and prevention
WSSV white spot can kill a whole pond within 3–10 days. How to spot white spots on the shell, when outbreaks occur and a biosecurity prevention routine.
Acute hepatopancreatic necrosis disease (EMS/AHPND) in shrimp: signs and how to prevent early mortality
Shrimp dying 10–35 days after stocking with a pale, atrophied hepatopancreas? Learn the signs of EMS/AHPND and an effective prevention routine for ponds.
White feces disease in whiteleg shrimp: causes, signs and effective treatment
Whiteleg shrimp passing white faeces, faeces floating on the pond, discontinuous gut? A guide to early detection, causes (bacteria, parasites, EHP) and treatment steps.
Pond health solutions
All solutions- White faeces, hepatopancreas, gut Shrimp white feces disease, hepatopancreas and gut problems: treatment and prevention See treatment steps and 34 products
- Black spot, black gill, fouling Shrimp black gill, black spot and fouling disease: treatment and prevention See treatment steps and 4 products
- Soft shell, bent body, slow growth Shrimp minerals for soft shell, bent body, muscle necrosis and weight gain See treatment steps and 39 products
- Algae & water colour Water colour building and algae control products for shrimp ponds See treatment steps and 26 products
- Toxic gas, liner slime, pond bottom Probiotics for pond bottom treatment, toxic NH3, NO2, H2S and slimy pond liners See treatment steps and 34 products
- Low oxygen, shock, stress Emergency oxygen, anti-shock and stress relief for shrimp See treatment steps and 23 products
- Disinfection & snail control Water disinfection, snail control and parasite treatment for shrimp ponds See treatment steps and 12 products
- Digestion, immunity, vitamins Digestive enzymes, vitamins, immunity and growth boosters for shrimp See treatment steps and 37 products
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