Case Study: Preventing Bottom Heat and Low Bottom Dissolved Oxygen During High-Temperature Periods in Shrimp Ponds

2026-06-05

Entering the summer heat, we inspected Local Boss Feng’s 20-mu shrimp pond. The average stocking density is around 40 shrimp per kilogram. Feed consumption has slowed significantly, and dead shrimp are frequently found beneath the aerators. Near the shoreline, visible bubbles are rising from the pond bottom. Water quality tests show normal parameters, with only a slight trace of hydrogen sulfide; however, dissolved oxygen levels at the pond bottom remain low.

Recommended treatment: First, apply Bishui Jiedu’an (3 mu per bottle) by evenly broadcasting it across the entire pond, followed by the use of Qiangxiao Fenjie Dibai (5–6 mu per bag).

Mix with Peroxide Bottom Cleaner (20 mu per bucket) and evenly apply throughout the entire pond. Apply every 2–3 days. For long‑acting, large‑area oxygen tablets, place two tablets per mu; use every 3–5 days as a preventive measure against nighttime fish surfacing.

After two applications, feed consumption noticeably increased, bottom‑water bubbles gradually dissipated, and hydrogen sulfide levels as well as low dissolved oxygen at the pond bottom returned to normal.

As the water temperature rises and feeding increases, the pond bottom deteriorates, making it prone to bottom‑heat conditions and hydrogen sulfide blooms. A telltale sign is the frequent emergence of small bubbles from the pond bottom near the shore. Other obvious symptoms include slow feed consumption and sporadic mortalities; in severe cases, this can trigger algal die‑off, leading to widespread fish kills due to oxygen depletion at the surface.

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