Help me identify these plants

[jeffnewt]

Hi all, these plants hitched into my tank, and now they have grown quite big.

The first one, oddly enough, turns almost white at night, and after the lights come on, it gets green again.

The second one resembles some kind of kelp.

 

[burning2nd]

idk but i have that fist one growning nicely in the 5.5

 

[diablo]

first pic is halameda..

 

[returnofsid]

As mentioned above, first pic is Halimedia. It's fairly non aggressive but can grow pretty quick, choking out corals. It's also very calcium dependant, so be aware that it will consume calcium that SPS and Clams need. I have lots of it in my tanks. Just culled a lot of it out of my 46.

Second pic could be some kind of Caelurpa.

 

[Herefishyfishy]

2nd is not calurpa. It has several branches radiating from a single holdfast. Kelp of some type. Would need to know where it came from.

 

[Herefishyfishy]

How about brown seaweed, perhaps something related to Ascophyllum nodosum

 

[joshinjosh]

Sargassum sp.

 

[Herefishyfishy]

Yeah, think you are right. Location would help with which species

 

[Damsel13]

bet my tang would like that second type

 

[jeffnewt]

Thanks everyone. As far as the second one, I have no clue as to where it came from for absolute sure, but I was told fiji.