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What kind of filtration do you already have? As others have said, skimmers help with gas exchange (oxygenation) as well as removing organics. If you have a HOB filter that's providing surface agitation you will probably be fine without a skimmer for gas exchange, but depending on your bioload and the needs of your specific coral, it's possible a skimmer would help.Should I add one to my 30g?
I am not adding oneWhat kind of filtration do you already have? As others have said, skimmers help with gas exchange (oxygenation) as well as removing organics. If you have a HOB filter that's providing surface agitation you will probably be fine without a skimmer for gas exchange, but depending on your bioload and the needs of your specific coral, it's possible a skimmer would help.
I always thought you needed one. I have a 45g but with a lot of coral.Not a necessary piece of equipment at all, especially in a 30 gallon aquarium. You could add one which will help with pH and o2 exchange as well as removing some dissolved organics, but I would recommend you only do that if you have a sump as they are a bit of an eyesore and more finicky if they are hang on back (hob)
What are roller mats?Agreed! The new trend I’m seeing thou are these roller mats and everyone is ditching the skimmer because it doesn’t work any more lol… which is fine I guess but I like to keep my o2 levels up..
You don't NEED any specific pieces of equipment, they just make it easier to achieve the water quality (including temp) you want to have.I always thought you needed one. I have a 45g but with a lot of coral.
Google and the search feature here are your friends...What are roller mats?
Sounds like you have a fair bit of learning ahead of you. Refer to the suggestions in post #2...I am not adding one
I am not exactly sure what my filter is though
Mostly LPS, frogspawn, hammer, trumpets, Duncan's and acans. I have 2 SPS, a birdsnests and a lepto. Pretty much everything else are softies.What stony corals are in there?
100% not a necessary piece of equipment regardless of amount of coral. Maybe if you cant get the nutrients down through water changes, carbon dosing, gfo, or refugium, etc. The only necessary time might be if you are running a tank with a sealed lid but then you are using it mainly for O2 exchangeI always thought you needed one. I have a 45g but with a lot of coral.
Thanks put I’ve pretty much put all the ones you have.Mostly LPS, frogspawn, hammer, trumpets, Duncan's and acans. I have 2 SPS, a birdsnests and a lepto. Pretty much everything else are softies.
There are still on shipI added
2 gogorians
A Zoanthid
A hammer
A green star
Frogspawn
2 birdsnest
A lepto
A cabbage leather
A duncan
A Candy cane
A trumpet
from those corals do you think I need a protein skimmer?
You're still missing the point.I added
2 gogorians
A Zoanthid
A hammer
A green star
Frogspawn
2 birdsnest
A lepto
A cabbage leather
A duncan
A Candy cane
A trumpet
from those corals do you think I need a protein skimmer?
Nice tank!This is my tank without a protein skimmer. I have green star, hammer, frogspawn, candy cane, palys, leathers, gorgs, BTA, bird's-nest and even a lepto. My tank does have macroalgae for nutrient uptake. The macros take up dissolved organics the same as a skimmer and I like the looks of them.![]()
You don't NEED any specific pieces of equipment, they just make it easier to achieve the water quality (including temp) you want to have.

