Plants getting "eaten"

[littlehermit0]

I feel like I'm the only one here who has plants in a reef tank, but hopefully someone know why do they get white spots and then holes, then getting eaten by nothing and just disappearing

this one isn't that bad yet, but some weird things appear

but this one... Terrifying, it's isolated and the plant disappears slowly!!! It was huge but now look, the brown one too, these are my only cold marine kelp that I have

 

[i cant think]

I feel like I'm the only one here who has plants in a reef tank, but hopefully someone know why do they get white spots and then holes, then getting eaten by nothing and just disappearing

this one isn't that bad yet, but some weird things appear

but this one... Terrifying, it's isolated and the plant disappears slowly!!! It was huge but now look, the brown one too, these are my only cold marine kelp that I have

That crab may explain it to you…

 

[littlehermit0]

That crab may explain it to you…

Yes I see him eating the plants a lot but I'm talking more about the weird white spots..

they are making holes

 

[i cant think]

Yes I see him eating the plants a lot but I'm talking more about the weird white spots..

they are making holes

I know it’s a stupid question but is the tank cold water?

 

[littlehermit0]

I know it’s a stupid question but is the tank cold water?

This one is warm, the other is cold

 

[i cant think]

This one is warm, the other is cold

I would add a wrasse to see if it’ll do damage to the bugs on the algae.

 

[littlehermit0]

I would add a wrasse to see if it’ll do damage to the bugs on the algae.

This will sound crazy but my tank is exposed to sooo much things that fish are literally banned from the tank, dying within days, it's a long story of what happened
I'll try to buy a cheap chromis to see what will happen (testing if they'll survive)

 

[ISpeakForTheSeas]

Yes I see him eating the plants a lot but I'm talking more about the weird white spots..

they are making holes

Any chance you could get a sample of one of the leaves with the white spots to get the white spot portion of the leaf under a microscope?

I am definitely not a macroalgae expert (so take my comment with a healthy grain of salt), but my first thoughts would be either inappropriate conditions for keeping them in or some sort of infection (bacteria, fungus, etc.).

Hopefully some of the more experience macro keepers will chime in for you here though.

 

[littlehermit0]

Any chance you could get a sample of one of the leaves with the white spots to get the white spot portion of the leaf under a microscope?

I am definitely not a macroalgae expert (so take my comment with a healthy grain of salt), but my first thoughts would be either inappropriate conditions for keeping them in or some sort of infection (bacteria, fungus, etc.).

Hopefully some of the more experience macro keepers will chime in for you here though.

I'll try tomorrow, I don't have a microscope but luckily I have something really similar to one, I also agree with what you said it's probably on of those

 

[Subsea]

Copepods would be one guess. However, you should be able to see them moving in slow motion.

 

[Subsea]

Yes I see him eating the plants a lot but I'm talking more about the weird white spots..

they are making holes

Did you say the macro was a kelp? It looks like Calurpa Prolifera.

I have seen those white spots on flat blades of green seaweed.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8621314/

This link is a scientific article on biofilm on the seaweed Sargassum. Use this scientific website with the scientific name of your seaweed and see what comes up.