Lighting Help

[petrr8]

Hey guys. I'm new in the hobby and I'm cycling my first tank now. I have a 18x20x18 tank which has a 28gal. I'm a little bit confused about lighting and I've read alot about do not follow the traditional watt per gallon rule. Anyways, I have 1 4watt T5 LED white and 1 4watt T5 LED Blue. Is this enough? If not, how many of this I would need?

The specs are of one light are:
Lumens: 320lm
CRI: 80
Watts: 4

I'll leave some pictures as well.

 

[Big G]

Welcome to R2R!

Here's a link to a pretty good video that can help you: https://www.bulkreefsupply.com/vide...MIsMfMq6zk4AIVkCCtBh1h-wwiEAAYASAAEgJg_vD_BwE

 

[jda]

You can ROUGHLY divide by 60 with a daylight bulb to convert lumens to PPFD/PAR. That leaves about 8 PAR. Most softies need 50-100 at a minimum and can handle a lot more. Those appear very much underpowered for even low-light corals.

Fish will not care if you are just going to do a fish tank.