What is this?

[Wwidener]

This red, brown clam shell looking like thing developed in my tank. This is the second time. I have two false clowns and a wrasse in the 30 gal tank. What is it?

Also, I believe this red algae is Cyano on the substrate, no? If not, what is it? If so. How can I get rid of it? All I do now is just scoop sand over it.

Thanks.

[54seaweed]

large water changes along with more water circulation , ease up on feedings . a turkey baster works great for blowing off the rocks and you can lightly blow the sand surface while running a siphon .

You'll need to find the source of where the excess nutrients are coming from and fix it, Are you using tap or RO/DI water have you tested your water source for nutrients
what do your parameters look like.

how long has the tank been set up , the first 6 months is the big hurdle but it's up to you to get through it by maintaining your tank and keeping up with it . things will get better in time so just hang in there.

[Wwidener]

Originally Posted by 54seaweed

large water changes along with more water circulation , ease up on feedings . a turkey baster works great for blowing off the rocks and you can lightly blow the sand surface while running a siphon .

You'll need to find the source of where the excess nutrients are coming from and fix it, Are you using tap or RO/DI water have you tested your water source for nutrients
what do your parameters look like.

how long has the tank been set up , the first 6 months is the big hurdle but it's up to you to get through it by maintaining your tank and keeping up with it . things will get better in time so just hang in there.

Tank has been set up for about a year. Parameters are WNL. I am using saltwater from the LFS but I do test their water before I add it and it's always WNL. I can imagine excess nutrients are from feeding, I have been concerned about that since I changed food from flakes to frozen food/chromaplex. The turkey baster is a great idea.

What about that clam looking like thing? It just appeared. It's a soft shell shaped, not living thing.

[bribo12]

Have you touched it? Has it ever moved? Do you have a pic of just it?

[54seaweed]

after thinking about it a while it hit me . sea cucumber than I did a search this is what I found.
Sea_cucumber

[54seaweed]

with your frozen food try using a small net and rinse it with a little tank water over a pail
that will help with nitrates some .