Grouper — High-value marine
Cage/marine-pond grouper easily catches parasites (marine white spot, gill flukes), Vibrio and nervous necrosis when water and cage bottom are foul. Solution: clean environment + immunity + treat the right agent.
01 / 04
Quick answer
Grouper needs stable salinity (25–33‰), good oxygen and current, and a clean cage/pond bottom. Use SOILMAX/MAX 4000 for the bottom, boost immunity with AQUAMOS + BETAGLUCAN GRO + vitamin C, protect the liver with HERB GUARD/MAX LIVER. Treat parasites (Cryptocaryon marine white spot, Benedenia gill flukes) with freshwater bath and WORK COP Plus; treat Vibrio with OXYTETRA/FLOR-MAX; disinfect with WORK 80/POWER GLUTA. Prevent viral nervous necrosis (VNN) with disease-free seed and biosecurity.
Biology & model
Grouper is raised in sea cages or lined marine ponds at lower density than pangasius, over a long cycle (8–12 months) but at high value. It is sensitive to salinity swings and water quality.
Marine environment
Leftover feed and waste accumulate under the cage/pond bottom, generating toxic gas and pathogens. Cleaning cage nets, bottom probiotics and good current/oxygen keep grouper healthy.
Parasites & ulcers
Marine white spot (Cryptocaryon) and gill flukes (Benedenia) are common parasites that cause flashing, gill erosion and off-feed. Early detection and treatment prevent secondary bacterial infection.
Immunity & Vibrio
The long cycle makes grouper prone to stress and Vibrio. Immune support (AQUAMOS, BETAGLUCAN GRO), vitamin C and liver protection help; on bacterial infection use the right antibiotic.
02 / 04
Clean cage/bottom
Clean cage nets regularly, remove leftover feed; SOILMAX + MAX 4000 to treat the bottom of the culture area.
Boost immunity
AQUAMOS + BETAGLUCAN GRO + CANFORTA (vitamin C) regularly; HERB GUARD for liver over the long cycle.
Parasites
Freshwater bath 5–10 min or WORK COP Plus; AQUA PRAZI for gill flukes.
Bacteria / Vibrio
Use OXYTETRA or FLOR-MAX by agent; disinfect with WORK 80 / POWER GLUTA. Observe withdrawal.
Prevent VNN
Choose disease-free seed (PCR-tested), keep biosecurity, avoid sudden environmental shock.
03 / 04
21 products in 6 groups.
SOILMAXMulti-strain environmental probiotics, suppress Vibrio
SOILMAX NewConcentrated bottom probiotics, decompose organics, cut toxic gas
MAX 4000Broad-salinity probiotics, strong at low-oxygen bottom, cut NH3/NO2/H2S
NIAZYMEClean water & bottom, remove toxic gas, build water color
AQUA PRO4000XBroad-salinity probiotics treat bottom/water, control algae — fresh & marineUse under guidance, observe withdrawal period.
WORK COP PlusDisinfect bacteria, fungi, protozoan parasites
AQUA PRAZITreats parasites: monogeneans, gill flukes, fish lice
OXYTETRATreats Aeromonas/Pseudomonas hemorrhage; Vibrio luminescence
FLOR-MAXFlorfenicol for bacillary necrosis (Edwardsiella ictaluri)
TETRA-CAntibiotic + vitamin C — treat infection, support immunity04 / 04
Freshwater bath 5–10 minutes to drop parasites, plus WORK COP Plus disinfection. Marine white spot has a complex life cycle, so repeat by cycle and keep water/bottom clean to avoid reinfection.
Salinity 25–33‰, high dissolved oxygen and good current. Grouper is sensitive to abrupt salinity swings — after heavy rain, monitor and avoid shock.
Usually parasites (white spot, gill flukes), Vibrio, or a foul environment/toxic gas under the cage. Check parasites and water; treat parasites first, then boost immunity and protect the liver.
Grouper and marine fish can use: SOILMAX/MAX 4000 (environment), AQUAMOS + BETAGLUCAN GRO (immunity), HERB GUARD/MAX LIVER (liver), WORK COP Plus/WORK 80/POWER GLUTA (disinfection, parasites) and OXYTETRA/FLOR-MAX for bacterial infection.
Than Vuong's technical team designs a free protocol for your pond or cage — reply within 24h.
Aquaculture technical assistant
