
- Routine feed supplement0.5 – 1 g/kg feed
- Against shock, in feed2 – 3 g/kg feed
- Against shock, applied to water when meals are cut1 – 3 g/m³
At least 200,000 mg of vitamin C (L-ascorbic acid) per litre — added to feed to keep fish strong and lively, ease shock when conditions change and help improve flesh colour and flavour before harvest.
- 200,000 mg
- Vitamin C /L (min)
- 0.5 – 1 g
- /kg feed, routine
- 2 – 3 g
- /kg feed against shock
- 1 kg
- bottle
- Form
- Liquid
- Packaging
- 1 kg bottle
- TCCS
- 45:2019/TV
- Product code
- 01058939
3 main benefits
- 01
Strengthens immunity, supports nerve signalling and antioxidant defence, helping fish cope with shock.
- 02
Keeps fish strong and lively and reduces slime loss.
- 03
Supports detoxification, whitens the flesh and reduces weedy, muddy off-flavour in fish muscle.
Liquid vitamin C for healthy fish and better flesh
Fish need vitamin C from their feed, and the need rises when the weather turns, when meals are cut, during transport and before harvest. GRO C30 is a liquid, so it mixes evenly into feed and can also be diluted and applied to the water.
- 01
Resistance, less shock
Supports immunity, nerve signalling and antioxidant defence, helping fish cope with shock when conditions change.
- 02
Strong, lively fish
Keeps fish strong and lively and helps reduce slime loss.
- 03
Whiter flesh, less off-flavour
Supports detoxification, whitens the flesh and reduces weedy, muddy off-flavour in fish muscle.
Dosage per the product label
Mixed into feed, dose per kg of feed. Against shock it can also be diluted and applied per m³ of pond water.- Routine feed supplement0.5 – 1 g/kg feed1 – 2 meals a day, 1 – 2 times a week
- Against shock, in feed2 – 3 g/kg feed1 meal a day, preferably midday or afternoon
- Against shock, applied to water when meals are cut1 – 3 g/m³
- Bath during transport1 g/10 – 20 L of water
- Whitening, improving flesh flavour of fish, snails, frogs, eels5 g/kg feed3 – 5 days in a row, with water exchange and yucca
How to use
- 1Shake the bottle before use
- 2Mix evenly into feed at the dose; for water use, dilute and spread over the pond
The colour may vary from clear to yellow-brown.
Close the cap tightly after use if not finished.
Withdrawal period before harvest: 0 days.
Composition · StorageComposition and storage
Composition
L-Ascorbic Acid, Solvent (distilled water).
Quality specification
Vitamin C (L-Ascorbic Acid) (min): 200,000 mg Solvent (distilled water) to 1 litre
Storage
Store in a dry, cool place away from direct sunlight. Keep out of reach of children.
Registration
- Company standard
- TCCS 45:2019/TV
- Reg. no.
- 01058939
- Form
- Liquid
FAQFrequently asked questions
- What is GRO C30 used for?
- Liquid vitamin C that raises resistance in fish, reduces stress and improves flesh colour and flavour
- How to use GRO C30?
- Shake well before use. Routine feed supplement: 0.5 – 1 g/kg feed, 1 – 2 meals a day, 1 – 2 times a week. Against shock, in feed: 2 – 3 g/kg feed, 1 meal a day, preferably midday or afternoon. Against shock, applied to water when meals are cut: 1 – 3 g/m³. Bath during transport: 1 g/10 – 20 L of water. Whitening and improving flesh flavour of fish, snails, frogs and eels: 5 g/kg feed for 3 – 5 days in a row, with water exchange and yucca. The colour may vary from clear to yellow-brown. Close the bottle/can tightly after use if not finished. Withdrawal period before harvest: 0 days.
- Main benefits of GRO C30?
- Strengthens immunity, supports nerve signalling and antioxidant defence, helping fish cope with shock. Keeps fish strong and lively and reduces slime loss. Supports detoxification, whitens the flesh and reduces weedy, muddy off-flavour in fish muscle.
- What packaging does GRO C30 come in?
- GRO C30 comes in 1 kg bottle.
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What pairs well with this product?
GRO C30 is often combined with products from the same line for the best results.
AQUA PRO4000XWide-salinity range microbial, environmental treatment, water purification, harmful bacteria reduction
SOILMAX NewConcentrated probiotic, for high-density fish/snails/frogs/eels farming, reduces ammonia
SOILMAXConcentrated multi-strain microbial product, environmental treatment, water purification
MAX 4000Wide salinity probiotics, highly active in low-oxygen bottom layers, for algae control
NIAZYMEProbiotic that builds water colour and turns fish pond water green
UNPARA ABIMicrobial pond bottom cleaner, improves water colorFish weak when the weather turns, muddy-tasting flesh?
Message us on Zalo or call the hotline for free advice from Than Vuong’s technical team — reply within 24h.

