Safe green macro suggestions wanted and will my light grow them?

[Bailyfox]

I don't think I've asked this question yet so as the title says does anyone have suggestions for safe green macro algaes that I could put in my 7 gallon cube to display?

 

The light I have is the ABI 12w cold white LED bulb (15,000k i think) The green macros i've looked into are Caulerpa prolifera, Caulerpa taxifolia, and Caulerpa racemosa all of which I've read can go sexual and grow to plague like proportions.

 

I'm thinking I will get red grape algae and blue hypnea or octodes for sure, but I'd like to get a green macro as well. I'm looking to try and pack different colors and textures into the tank to keep it looking interesting since I likely will not be upgrading until we move into a bigger place.

 

I may very well get a better light in the future when the budget allows but not for awhile.

[Seadragon]

I'm going with Gracilaria Hayi, Blue Hypnea, and Chaetomorpha myself.  That will give me the Red, Blue, Green cool color combination and although I didn't like how Chaeto can get into every nook and cranny at first, I found out over time that it's so hardy and does its job so well that it's worth the little maintenance upkeep I have to do to remove rogue strands.  It also has this deep emerald green color in my tank and is tightly packed behind a big rock.  As a bonus, I don't have to worry about it going sexual and getting out of hand.

[Bailyfox]

43 minutes ago, Seadragon said:

I'm going with Gracilaria Hayi, Blue Hypnea, and Chaetomorpha myself.  That will give me the Red, Blue, Green cool color combination and although I didn't like how Chaeto can get into every nook and cranny at first, I found out over time that it's so hardy and does its job so well that it's worth the little maintenance upkeep I have to do to remove rogue strands.  It also has this deep emerald green color in my tank and is tightly packed behind a big rock.  As a bonus, I don't have to worry about it going sexual and getting out of hand.

I am thinking of putting chaeto in my HOB filter, I'm not too big on the look of it personally for the display.