You are very correct.
The more wattage means the more powerful they are.
The other thing to make sure is that you choose the Hagen LIFEGLO bulbs as these bulbs are a better COLOUR for growing plants. 6700k.
The standard T8's with your tank are Hagen POWERGLO and AQUAGLO both rated around 45w with the colour 18000k. Not great for growing plants.
If you veer away from Hagen then you need to keep within the colour spectrum 5000k-10000k which will grow plants. The ideal being 6400k.
You ideally want to achieve over 2w per gallon.
So for your 63gallon tank you need at least 126w of light.
If you add 2x54w T5HO's this gives you 108w added to whatever wattage your T8's are currently. But I would change your current T8's to the LIFEGLO versions by Hagen.
I do plan on documenting my installation once my T5 lamps arrive.
Jon
The more wattage means the more powerful they are.
The other thing to make sure is that you choose the Hagen LIFEGLO bulbs as these bulbs are a better COLOUR for growing plants. 6700k.
The standard T8's with your tank are Hagen POWERGLO and AQUAGLO both rated around 45w with the colour 18000k. Not great for growing plants.
If you veer away from Hagen then you need to keep within the colour spectrum 5000k-10000k which will grow plants. The ideal being 6400k.
You ideally want to achieve over 2w per gallon.
So for your 63gallon tank you need at least 126w of light.
If you add 2x54w T5HO's this gives you 108w added to whatever wattage your T8's are currently. But I would change your current T8's to the LIFEGLO versions by Hagen.
I do plan on documenting my installation once my T5 lamps arrive.
Jon