First time buying a lightbulb, help me please! - The Planted Tank Forum
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post #1 of 2 (permalink) Old 02-12-2012, 11:01 PM Thread Starter
Algae Grower
Join Date: Jul 2011
Location: Albania
Posts: 77
First time buying a lightbulb, help me please!

Hi everyone! I hope you're doing well.
I am seeking everyone's adivce on purchasing a new light for my 20 gallon tank, it's a bit taller than longer, bu you can call it a 20 tall. I am really unexperienced on purchasing lights, so here's where your help is needed. What kind of bulb do I need for this tank to make it a high light tank? I'm planning to densely plant it. I'm not sure what bulbs the store has, T5 or T8, T10, T12 etc etc. but do I need to follow to rule of 3+ watt per gallon needed to make a high light tank? Is it true? It might be tough to find a 60watt in my area, so eg does a 30 watt bulb make it a high light or a moderate? I know that i depends on the bulb, but...
Also my light fixture is done by the previous owner of the tank and he only siliconed a bulb slot to the fixture. I'm planning to add more, but i wanted to know if is there a minimum distance between each bulb, will the over heat each other until they crack/burn?
Thanks again for your answers!
P.S. Sorry for any possible mistakes, I'm on my iPod and it's 1AM here lol...
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post #2 of 2 (permalink) Old 02-13-2012, 06:49 AM
Algae Grower
Join Date: Feb 2012
Location: Australia
Posts: 15
I can't give a exact answer because I'm fairly new at this myself and i don't know the dimensions of your tank. I would go for two 6700k t5s myself because there brighter then t8's for the same wattage, t8s will be ok aswell. If the bulbs are close to each other they wont break just make sure the light hood is ventilated and you'll be fine.
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