This has been an on going argument I have had with people.
8 x 54 watt = 432 watts
2 x 20 watt = 500 watts
Difference I run my 250 radiums 6 hours a day.
My friend runs his T-5's 9 hours a day.
Is he really saving money ?
IMHO I dont think so
I like the color I get from a 250DE Phoenix and 8 Cree XRE LEDs --- royal blues---for actinic supplementation. The LEDs put out a considerable amount of blue and use a total of around 30w.
That makes a difference, with 8 t5's you dont need to supplement. You are adding 216w of sup. to your MHs.ok for the power concious put this into consideration
if you run 2 x 250W MH = 500W
to get equivilient light with T5 you need 8 + bulbs at 54W = 432W, so not much less power (based on 4ft)
i run 2 x 250WMH and 4 x T5 for colour with actintic and fiji purple.
ReefBum, your tank is awesome. What are those 2 yellow and white fishes on the left?
I run the combo. I have 6' Sfiligoi light fixture with 3 SE 400W bulbs and 8 39W T5s. Halides (driven by Sunlight Supply Blue Wave 7 HQI ballasts) are 20K Radiums while T5s are Giesemann POWERCHROME Actinic Plus. The MH bulbs give me both great growth and colors and the T5s really help me supplement the colors...they help make things pop.
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