MENNENI Group — Nurturing Nature for a Better Tomorrow

Pond Management After Heavy Rains: Overcoming Turnover & Acid Shock

Protect fish and shrimp ponds after heavy rainfall: pH drop, water turnover, alkalinity loss, and mineral crash management.

Visible Symptoms

Sudden water color change; water temperature crash; pH dropping below 7.5; shrimp crowding edges; soft shell and mortality 24–48 hours post-storm.

Primary Causes

  • Rainwater is acidic (pH 6.0–6.5) and dilute, crashing pond alkalinity and salinity.
  • Cool rainwater sinks, causing "pond inversion/turnover" that pushes toxic bottom sludge gases to the surface.
  • Sudden drop in water temperature triggers mass moulting in shrimp without adequate minerals.

MENNENI Products

  • Water & Soil Probiotic Granules — A probiotic for aquaculture pond water and pond-bottom (soil) management. 1 kg pack, pan-India delivery.
  • Soil & Water Probiotic — A probiotic for aquaculture pond water and pond-bottom (soil) management. 1 kg pack, pan-India delivery.
  • Water and Soil Probiotics — A probiotic for aquaculture pond water and pond-bottom (soil) management. 1 kg pack, pan-India delivery.

Frequently Asked Questions

Should I feed shrimp during heavy continuous rain?

No. Shrimp feeding drops by over 80% during heavy rain due to low temperature and barometric pressure drops. Withhold or cut feed by 70% to avoid feed decomposition.