/r/ReefTank

Photograph via //r/ReefTank

A friendly place to discuss and show off all things saltwater aquarium related!

Posting guidelines:


Please use the following tags when posting:

[SS] - Sump Sunday.

[MM] - Macro Monday.

[HTT] - How To Tuesday.

[DIY] - DIY Wednesday.

[TDT] - Top Down Thursday.

[FTS] - Full tank shot Friday.

[ID] - For identification of a hitchhiker (check here first), fish or coral.

[Help] - When you need help with your tank. Also include the following:

  • Tank size (volume)
  • Tank age
  • Lighting
  • Filtration
  • pH
  • Temperature
  • Nitrate
  • Nitrite
  • Phosphate
  • Calcium
  • Alkalinity

Posts created only for self promotion or to promote a business you are affiliated with must be clearly marked in the post title or they wil be removed.


Helpful links.


Reef Aquarium Ideal Parameter
Specific Gravity 1.023 - 1.028
Temperature 75 - 79°F
pH 8.0 - 8.4
Alkalinity 7 - 12 dKH
Ammonia (NH3) None
Nitrite (NO2) None
Nitrate (NO3) < 20.0 ppm
Phosphate (PO4) < 0.1 ppm
Calcium 400 - 500 ppm
Magnesium 1300 - 1500 ppm

/r/ReefTank

135,554 Subscribers

4

Single 40Gal Ritteri anemone Tank

The tank has somewhere around 1 and half year.

Simple sump with skimmer, carbon filter, mídia and perlon.

I want to add some LPS. Any tips when dealing with large anemone and LPS on the Same rock?

Any suggestions to bottom corals? Tks ❤️

2 Comments
2025/02/02
22:38 UTC

1

Mixing salt questions.

Can I just make like a bucket - say about 20 litre of water and mix in enough salt for 55 litre then add it to the tank with distilled water in it? I’m trying to think of easier ways to do it as I have a toddler running around as well lol

1 Comment
2025/02/02
21:14 UTC

1

2 questions, asked by a newbie

I just added my first ininhabitants, a nice pair of clowns yesterday (how original), they seem to be sticking to the left side of the tank and never explore or anything, the question is.. is there too much flow? Or do they just like it there? The right side of the tank has a bit less flow but I have no idea what it looks like when they really struggle to swim or when they just enjoy the place they are at, my wave maker is down to 1% and I did reduce the return pump speed as well to see if they are out and about more but it doesn't make a difference at all

And secondly I have a nassarius snail, or aactually I have 2 but 1 of them went down in the sand the second I added him (as I expected them to do) and 1 just laying on its side doing whatever it does, it's not dead because when I touch it it does go inside its shell, but it hasn't moved at all from where I placed him yesterday.. I'll add a picture in the coments

13 Comments
2025/02/02
20:24 UTC

1

Uv steriliser, yes or no?

Hey everyone i was wondering if i should get a uv steriliser for my red sea 200 g2 (42 g). Ive been seeing a lot of pros but also some cons. Is it worth it to get one?

5 Comments
2025/02/02
20:16 UTC

0

What to do with toxic sponges?

So I just got an orange sponge cause I wanted my vowel beauty to have it to pick on. On the way home I am now reading that they can release toxins and kill corals. Is there anything I can do so it won’t be a complete waste?

4 Comments
2025/02/02
20:00 UTC

2

Filter sponge?

Is the attached on the rock a filter sponge? Have a similar one on another piece of rock work that’s double in size?

0 Comments
2025/02/02
19:58 UTC

1

Clownfish fighting or dominance?

Yesterday I added this clownfish. The second clownfish that is hiding in the back corner was already in my tank for over a week. I noticed that my first clownfish did a jerk movement when I first introduced the 2nd clownfish. The clownfish jerked back. The 2nd started being more dominant and jerked more often while my first one stopped all together and began to hide in the back corner. When the 2nd clownfish sees my first one, it’ll chase it and jerk— and the clown hides in the back. The two sometimes swim alongside without chasing.

This morning I woke up and they were in the same area. When the lights came on, they went into their separate corners.

Are they establishing dominance, or are the two completely not getting along?

They are similar in size, but the 2nd clownfish was with another smaller clownfish when I got it at the lfs. The first clownfish was mixed with 4-5 other clowns similar in size and they were all swimming independently//alone.

Also— can someone help me ID these two? The dark one is completely black with an orange face (sold to me as a midnight lighting), while the other is dark brown/orange with light orange face.

0 Comments
2025/02/02
19:45 UTC

1

Is this the thing or just green digi either eay i got it for $20 so im stoked.

Oceanlife aquariums in houston. Good peeps

0 Comments
2025/02/02
19:39 UTC

1

what wrong with my nem

https://preview.redd.it/7j3u2prj2sge1.jpg?width=5184&format=pjpg&auto=webp&s=a527cf0ceaaf3e37492ef3bcdcdaf6c8d68667f9

https://preview.redd.it/3p2j6nrj2sge1.jpg?width=5184&format=pjpg&auto=webp&s=accd9dbb1ba4372960a783cf1f502ba390a4806d

had this guy for 3 months looked like this after about 2 weeks and stayed like this throughout. parameters: 0 nitrite,27 ppm salinity , nitrate 5ppm, ammonia 0ppm

0 Comments
2025/02/02
19:38 UTC

0

90 gallon planted freshwater tank

1 Comment
2025/02/02
19:35 UTC

1

Possible flatworm id

Is this a flatworm? If so does anyone know which kind?

2 Comments
2025/02/02
18:29 UTC

2

Zoanthid ID?

I can’t seem to find these anywhere online, got them from a local hobbyist. Just curious about a name

4 Comments
2025/02/02
17:45 UTC

105

My reef is super mid 😐

51 Comments
2025/02/02
17:44 UTC

2

Filter roller

I just picked this filter roller up for 60 bucks. Was it an good idea or should I just stick with filter socks? I can't machine wash the marine innovate ones so they're hard to clean. Good idea or bad?

2 Comments
2025/02/02
17:25 UTC

47

Brand new 30 gal, day 1 of cycling!

For your enjoyment.

10 Comments
2025/02/02
17:06 UTC

1

Opinions on these params?

Has been around this for the past month or 2 - with ZERO water changes

5 Comments
2025/02/02
16:59 UTC

3

Why does my torch look so sad?

I have a 15g cube tank. I just tested my tank yesterday: Salinity: 35 pH: 8.5 KH: 7 Ca: 410 Nitrate/nitrite: 0 (going to try to raise a little to see if that helps)

I’m currently running a filter cartridge, plus some chemipure in the sump behind the tank. The filter cartridge is definitely super dirty; waiting on filter floss so idk if that affects anything. I haven’t changed its location; a few weeks ago it was thriving in this same spot! Any advice appreciated.

11 Comments
2025/02/02
16:49 UTC

0

What in Poseidons sea is this?

Can anyone help identify this creature? Good or bad?

4 Comments
2025/02/02
15:36 UTC

Back To Top