please tell me what these are

[renne39]

 

[kau_cinta_ku]

looks like diff. types of macro algae.

the 1st one looks cool though. you will have to sell me some of that

 

[otrlynn]

2nd from the bottom is Halimeda. It apparently is not as efficient as chaeto in removing nitrates, but it can be grown in your DT. I have some in mine and I like the look of it. It needs to be trimmed back occasionally but does not spread all over the place like caulerpa does. FYI, it will get whitish when the lights go off but will "green up" when they come on.

 

[reefworm]

yup. macro algae. some varieties can really take off once established, so keep an eye on them. in a sump or refugium they're great means of nutrient transport. is this a new set up? if so, macro is a common hitchhiker, and most are harmless, unless, as mentioned, they begin to take over.

 

[woodiecrafts]

third down looks like red gracillia, and the bottom looks like codium,,both are good at removing nitrates.