Guzmanias can adapt to darker conditions than other bromeliads. For this reason they do especially well in the low light of most homes.
Many Guzmanias do not tolerate extreme summer heat, especially sultry nights, but others do. Night temperatures of 60-80°F or 16-20°C are ideal for most.
Use an acidic fertilizer without boron, zinc, or copper micronutrients. Add slow release fertilizer to the potting mix. Use liquid fertilizer only very dilute.