Troubleshooting Tank Problems and Pests for Invertebrates

If you keep any invertebrate in a tank, you might quickly find that the enclosed environment and humidity levels create ideal conditions for pests and harmful organisms. Whether you care for arachnids, beetles, cockroaches, or millipedes, an awareness of common tank pests and proactive management is vital to your pet’s health.

This comprehensive guide details frequent problems encountered in invertebrate tanks and practical solutions to help you maintain a safe, healthy environment.

1. Identifying and Managing Mites

Mites are tiny arachnids, often hitching a ride on decomposing organic matter like shed skin cells. They can inhabit the bodies of arachnids, beetles, cockroaches, and millipedes. Some mites even benefit their hosts by cleaning dead skin, but parasitic types can harm your pets if they multiply excessively.

Spotting mites usually requires close inspection using a magnifying glass or microscope. Signs of your pet declining in health or visible irritating mites warrant immediate action. Regular substrate cleaning and quarantining new invertebrates help prevent infestations.

2. Avoiding and Controlling Nematodes

Nematodes are tiny translucent worms notorious for causing irritation, itching, and sometimes consuming pet eggs. They typically enter tanks via infected or non-sterilised substrates, such as garden soil, or through wild-caught invertebrates like tarantulas and beetles.

To reduce risk, use only sealed, sterilised substrates. Eradicating nematodes once established can be tricky and, if uncontrolled, they may seriously compromise your pet’s health.

3. Managing Fungus and Mould Growth

Small amounts of fungus and mould are common in humid tanks that match invertebrate habitat needs. Problems arise when humidity becomes excessive or substrate and leftover food aren't cleaned regularly. Mould spores may cause respiratory issues and fungus on discarded food can be toxic if ingested.

Ensure prompt removal of uneaten food, frequent substrate changes, and consider reducing humidity or improving airflow if fungus persists despite good care.

4. Preventing Fruit Flies and Other Flying Insects

Fruit flies, gnats, and phorid flies thrive in moist, decomposing food environments. Fungus gnats especially are attracted to the presence of fungus and mould, reinforcing the importance of mould control.

Prevent access by securing lids with fine mesh and use fly strips cautiously on tank covers, keeping them out of reach of your pets. Prompt cleaning of uneaten food is crucial to break the lifecycle of these pests.

5. Controlling Bacteria and Viruses

Bacteria and viruses naturally co-exist in tank ecosystems; some aid digestion and health, but harmful strains can infect invertebrates causing unexplained illness or death, such as the Wolbachia bacterium linked to insect losses.

Reduce risk by sourcing live food such as crickets from reputable suppliers with good husbandry, maintaining strict hygiene, and quarantining new tank additions. Regular cleaning minimizes pathogen build-up and helps maintain balance.

6. Addressing Water Quality and Environmental Factors

Though many invertebrates need humid or moist conditions, water quality and tank environment must be monitored. Overfeeding and organic waste accumulation can cause nutrient buildup, leading to algae or bacterial blooms, clouding water or reducing oxygen.

Regular water changes, substrate siphoning, good filtration, and avoiding overfeeding keep nutrient levels in check. Maintain stable temperatures with a reliable heater and adequate aeration to prevent stress and respiratory issues.

7. Prevention and Best Practices

• Regular Tank Hygiene: Clean substrate and remove waste frequently to deter pests and pathogens.
• Feed Responsibly: Only offer what your invertebrates will consume swiftly to avoid leftovers attracting pests.
• Use Sterilized Substrate: Avoid garden soil or unsterilised media to prevent nematode and mite introduction.
• Quarantine New Arrivals: To minimise infectious risks, isolate new invertebrates until you are confident they are healthy and pest-free.
• Maintain Optimal Humidity and Ventilation: Balance humidity to your pet’s needs but avoid excessive moisture that encourages mould and flies.
• Secure Enclosure Closely: Use fine mesh or sealed lids to keep unwanted insects out.
• Source Food and Pets Reputably: Healthy live food and invertebrates from responsible providers reduce disease risks.

Through careful husbandry and vigilance, you can provide a balanced environment that supports your invertebrates’ health, minimising tank problems and pest outbreaks.