IReef Bacteria – COMING SOON

REEF – Bacteria – Rhodopseudomonas palustris (R. palustris)

Dosing into a reef tank offers several benefits, as this is a versatile purple non-sulfur bacterium (PNSB) with powerful capabilities for nutrient cycling and waste management. Here’s why reef keepers use it:

1. Enhances Nutrient Cycling

R. palustris plays a crucial role in breaking down organic waste, helping to process ammonia, nitrite, and nitrate.

It can utilize both organic carbon and inorganic nitrogen sources, improving overall water quality.

Reduces nitrate and phosphate levels, preventing algae overgrowth.

2. Promotes Beneficial Microbial Balance

It competes with undesirable bacteria, including pathogens, by occupying similar ecological niches.

Supports a healthier microbiome, enhancing the efficiency of natural filtration.

3. Improves Water Clarity

By breaking down organic matter, R. palustris helps reduce detritus accumulation and suspended particulates, leading to clearer water.

4. Provides an Additional Food Source

This bacterium produces valuable bioactive compounds and can serve as a supplementary food source for filter feeders, corals, and sponges.

Some reef keepers report improved coral coloration and polyp extension due to increased bioavailability of beneficial compounds.

5. Enhances Denitrification in Anaerobic Zones

R. palustris can function in both aerobic and anaerobic environments, meaning it can contribute to denitrification in deep sand beds and refugia.

6. UV and Light Utilization

Unlike many bacteria, R. palustris is photosynthetic and can use light to drive metabolic processes, making it unique in its ability to contribute to tank stability.

7. Detoxification of Harmful Compounds

This bacterium has been studied for its ability to degrade various pollutants, including heavy metals and toxins, potentially making the tank environment safer for inhabitants.

How to Dose Rhodopseudomonas palustris?

Typically introduced as a liquid culture.

Best dosed in areas of good flow but away from direct filtration to allow colonization.

Many aquarists start with small amounts and gradually increase based on tank response.

Dosing Guidelines (General Starting Point)

1. Initial Seeding Dose (For New or Unseeded Tanks)

2.5–5 mL per 10 L of tank water.

Dose in a high-flow area but not directly into filtration to allow proper bacterial establishment.

Reduce skimmer operation for 2–4 hours after dosing to avoid removing bacteria.

2. Maintenance Dose (For Established Tanks)

1.25–2.5 mL per 10 L every 3–7 days, depending on bio-load and nutrient levels.

Adjust dosage if you notice significant reductions in nitrate and phosphate or excessive bacterial blooms.

3. Problem-Solving Doses (For Specific Issues)

High Nitrate or Phosphate: Dose 2.5–5 mL per 10 L every other day until levels decline.

Cyanobacteria Control: Dose 2.5 mL per 10 L every 3–5 days and reduce excess nutrients.

Detritus & Water Clarity Issues: Dose 1.25–2.5 mL per 10 L weekly and ensure good flow

Additional Considerations

✅ Tank Size Adjustments: Scale the dose based on your tank’s volume.

✅ Refugia & Sandbeds: If you have a deep sand bed or refugium, dose in these areas to enhance denitrification.

✅ Light Exposure: R. palustris can utilize light, so dosing in a refugium with a grow light may boost its activity.

✅ Monitor Nutrient Levels: If nitrates or phosphates drop too low, reduce dosing to avoid starving corals.