What type of macro is this?

[Kapachuka3]

Just bought a hunk of macro from my lfs and the employee told me it would grow like crazy. Anybody know what type this is called?

 

[KrisReef]

That is an invasive weed, caulerpa. Unless you want a tank full of it I would put it in the sump or in the trash. I've seen it overrun a tank before, usually with tears of racmosa.

 

[Kapachuka3]

That is an invasive weed, caulerpa. Unless you want a tank full of it I would put it in the sump or in the trash. I've seen it overrun a tank before, usually with tears of racmosa.

Ah ok, so I have a kenya tree and gsp in the tank as well. I have it sectioned off in a corner of the tank with a pencil urchin that really only stay in that section. My other section is kenya and gsp

 

[Kapachuka3]

Ah ok, so I have a kenya tree and gsp in the tank as well. I have it sectioned off in a corner of the tank with a pencil urchin that really only stay in that section. My other section is kenya and gsp

 

[Eagle_Steve]

Being sectioned off like that, you may be able to contain it and trim any runner before they reach the other rocks. You will just need to be sure when you trim, (I would do this regularly to keep it from going sexual aka spawning) to make sure you get all of the pieces trimmed out of the tank and not let them settle anywhere else. Even the tiniest bit will grow into a new colony of macro.

 

[Kapachuka3]

Being sectioned off like that, you may be able to contain it and trim any runner before they reach the other rocks. You will just need to be sure when you trim, (I would do this regularly to keep it from going sexual aka spawning) to make sure you get all of the pieces trimmed out of the tank and not let them settle anywhere else. Even the tiniest bit will grow into a new colony of macro.

Gotcha

 

[Kapachuka3]

Being sectioned off like that, you may be able to contain it and trim any runner before they reach the other rocks. You will just need to be sure when you trim, (I would do this regularly to keep it from going sexual aka spawning) to make sure you get all of the pieces trimmed out of the tank and not let them settle anywhere else. Even the tiniest bit will grow into a new colony of macro.

I actually have a smaller tank a 13 gallon which i kinda want the algae to take over? Is that advisable to do i think it would look cool seeing a tank taken over by green stuff.

 

[Cthulukelele]

I actually have a smaller tank a 13 gallon which i kinda want the algae to take over? Is that advisable to do i think it would look cool seeing a tank taken over by green stuff.

It can really gum up machinery when it spawns, but there's no reason you couldn't let it overrun if you like it

 

[Cthulukelele]

But don't get it twisted if it establishes on other rocks short of bleaching the system you will 1000% never get rid of it so be sure you like it

 

[Eagle_Steve]

It can really gum up machinery when it spawns, but there's no reason you couldn't let it overrun if you like it

I agree with this.

One thing to think of for a macro only tank is food for the macro. You will need fish or you will need to dose nutrients for it.

I have had many macro only tanks with no fish or anything and just dose Austins ammonia to feed the macro. I am not talking enough ammonia to hurt livestock if you had any, but enough to provide a simple food source for the macro.

 

[Rtaylor]

The pics aren’t clear but likely either caulerpa peltata or caulerpa racemosa.
Peltata is more cup like and racemosa is more grape like

 

[Kapachuka3]

I agree with this.

One thing to think of for a macro only tank is food for the macro. You will need fish or you will need to dose nutrients for it.

I have had many macro only tanks with no fish or anything and just dose Austins ammonia to feed the macro. I am not talking enough ammonia to hurt livestock if you had any, but enough to provide a simple food source for the macro.

Gotcha, i have fish and i plan on getting a goby/shrimp pair

 

[Cthulukelele]

Gotcha, i have fish and i plan on getting a goby/shrimp pair

Be careful with the goby and the pencil urchin. Should be fine, but make sure he establishes a hole to live in. Pencil urchins have been known to snack on sleeping small benthic fish

 

[Kapachuka3]

Be careful with the goby and the pencil urchin. Should be fine, but make sure he establishes a hole to live in. Pencil urchins have been known to snack on sleeping small benthic fish

Oh i was talking about the small tank, it doesnt have an urchin

 

[Tamberav]

Ah ok, so I have a kenya tree and gsp in the tank as well. I have it sectioned off in a corner of the tank with a pencil urchin that really only stay in that section. My other section is kenya and gsp

Just trim it regularly and keep it off other rocks and it’s manageable. I would keep it if you like it. Just prune regularly.

 

[KrisReef]

Just trim it regularly and keep it off other rocks and it’s manageable. I would keep it if you like it. Just prune regularly.

So lots of other folks have posted regarding the nature of this macro. It is fine to keep but it grows very fast and is a real challenge to keep it from growing over everything. I have purchased live rock from a fish store that had this weed "appear"! growing out of it after a couple of years in my tank where there was nothing but rock on it. It is amazing how persistent this plant can be.

The MOST important warning, don't let any of this go free. No dumping trimmed strands in the toilet, no putting the rocks in the ocean when/if you leave the hobby. This plant is a known invasive of marine ecosystems so enjoy it in your tank as it grows quickly and looks cool, imo. Dry the rocks out in the garden, or fire pit, it is that tough of a macro!

 

[Tamberav]

If you have a nano (looks like it), you can get a tweezers, take the rock out and remove the roots should it spread. I keep a bunch of caulerpa for export in a fuge and what not. Kept some in nano's before.

Most everything kind of easy to control in a nano as long as you don't make crazy scape or glue it together.

 

[Kapachuka3]

So it has started to look like it “flaking” like theres white fuzz on it? Does it normally look like that?

 

[Kapachuka3]

So it has started to look like it “flaking” like theres white fuzz on it? Does it normally look like that?

 

[RosehipScapes]

It looks like a large part of it is going sexual, you should pull those bits out. If it is all of it then that's that, I don't think it can be saved once it goes sexual. To me it also looks very starved of nitrate and phosphate, if any of it survives and you dosed those it would look much better, greener plumper and just generally healthier, I imagine even in the shop it didn't get much nutrients.

I keep a planted marine tank with lots of macroalgae (including Caulerpa racemosa) and I don't find it too bothersome to trim, though I am used to trimming plants weekly in freshwater. If you trim it regularly it looks lovely and luscious, and it hasn't been difficult to rip out whenever I don't want it. Like freshwater plants, the macroalgae needs nutrients to thrive (it can cause dinos if you don't dose extra nutrients), which is fine if you keep soft corals, but can become difficult with lps and often incompatable with sps. I only keep softies with my macroalgae and they grow well in the same conditions. I do have small portions of macro go sexual on me, but only very few weeks and it's easy to pull out with no problems.

Also I think urchins each macroalgae.