iHerp Australia Issue 14 | Page 30

UV output, however the provision of both UVB and bright, full-spectrum white light is important. UVB can be delivered using either a compact E27 screw-in light source or a T5 tube. UVB lights come in a range of strengths and an output of approximately 5.0 is recommended for amphibians. Keep in mind that the gauge of mesh on the lid, the type of UVB light source used and the overall height of the enclosure can all impact on the effectiveness of UV penetra- tion. Frogs require plenty of cover and areas to retreat to in order to regulate their exposure to UV light. A bioactive enclosure should also incorporate full- spectrum, plant growth lights. There are a number of high-quality LED plant growth lights now available in Australia. All lights must controlled by a timer and set to run for approximately 12 hours each day. Moisture and Humidity. Frogs are capable of breathing and absorbing water through their skin and require relatively high levels of moisture and some humidity. This can be provided through the use of a large water dish that is cleaned and refilled daily, regular misting, or by incorporating running water inside the enclosure. Any fresh tap water must be treated with an aquarium water conditioner prior to use to ensure chlorine and heavy metals are removed. Paludarium-style enclosures with running water must have adequate filtration and regular water changes should be carried out to ensure safe water quality is maintained. Automatic misting and fogging systems with in-built timers are available to assist in maintaining correct moisture and humidity levels. Excessive humidity may result in fungi and bacterial issues, so the correct balance, with adequate ventilation, is crucial. General Maintenance. Minimal cleaning is required in a bioactive system as the clean-up crew will do most of the hard work for you. It’s amazing to watch the springtails, slaters and earthworms completely break down a frog poo, so that it disappears into the soil in under 24 hours. If a plain substrate is used, regular spot clean- ing must be carried out to remove any faeces or uneaten insects. Frogs are extremely sensitive to chemicals and contaminants in their environment. Do not use any chemical disinfectants on water bowls or ornaments, and take care to avoid spraying aerosol cans or deodorants near a frog enclosure. Frogs generally do not