The blue aqualine 20000+ lamp has a colour temperature of about 20000° Kelvin. The use of this actinic bulb enhances the flourescent blue and green colours of many corals. The bulb should be used in combination with aqualine 10000.https://www.aquaristikshop.com/aquaristic/Aqua-Medic-aqualine-20000-HQI-TS/368320/
- Ally A. wrote about Aqua Medic aqualine 20000+ HQI-TS in 2016:
Great artecli, thank you again for writing.