Double the power

[C.Maher]

I am currently running just a single Kessil Tuna A80 on a 20 gallon long setup and I was thinking of possibly upping the power and adding a second one both for more light and a larger spread. I wasn't sure how worth it it would be as I only plan on keeping some softeys and some LPS. Please let me know if you guys have any suggestions, thanks.

 

[Spare time]

A single a80 does not have the spread for a 20 long length. You need a second regardless if you want to place corals on the full width of the tank.