Joseph C asked:


There’s a t5 lighting system available on ebay for about 30 dollars. I have a 20 gallon aquarium im looking to turn into a reef aquarium. Its a 20 high which is 24 in wide and the lighting system is only 14 inches long. The system comes with 3x 8 watt t5 lights one of which is a actinic blue light. Will this be sufficient lighting for corals and anemones or is it not good enough for them. If you could tell me what the lumens and kelvin of a t5 8 watt bulb is that would be great. Also what is the minimum lumens and kelvin is need for a 20 gallon tall tank. And don’t worry im doing a lot of research before starting this tank that’s why im asking….