reef tank

I love the look of macro algae aquariums. I absolutely fell in love with @tigahboy.h2o (on IG) setups. They look so good and really inspire me to start a macro algae tank setup. I’d love to see your macro algae tank setups for more inspiration!

Hello I am selling some raunchy red sunkist and fireshrooms along with some other nice mushrooms. They will range in price. I do a 4hr doa and 25 dollar for shipping I will be updating the thread very frequently so always check the last post for most up to dates pricing and avaiblity. I'm in...

Hi, probably a but early to be worried. I bought a Royal Gramma yesterday which when added to the tank darted straight for the rocks. It did this in the shop and went inside of the rock there so i think its done the same in my tank. From what ive seen they can hide for quite a while my only...

Hey y’all! this is my build thread tank size is 20 gallon long 9 month old 2 clowns saltwater mollies hammer coral, acro, zoa, and GSP A LOT of snail babies and large snails, hermits, and pep shrimp.

Hello! I was wondering what the best sand sifting gobies/blennies/dragonets would be for a 20 gallon long reef tank. I currently have a pair of clowns, pep shrimp, snails, and saltwater mollies. thanks in advance! :D

I recently purchased a few corals for my 20 gallon reef tank. One of them is a green acropora. I have had it for a little more than a week and at first it seemed to be doing great. But recently it has started to lose a lot of color and looks kinda pale. If anybody knows what wrong with it and...

Hey all, I'm not sure if my fish are having aggression issues or if this is normal behaviour. Any advice is appreciated! I recently downsized from a 24g to a Fluval 13.5. In it I have plenty of live rock with many crevices, tunnels, and hideyholes, my corals (mostly small except for a "large"...

Selling advanced acrylics 155g tank. Dimensions are 48x30x25 It’s peninsula tank with external overflow..asking 650$ obo

I’m looking at some tangs and Foxface’s. I think a Hippo tang is to big for the tank but what do you think? Are they reef safe? Are they aggressive? Are they hard to feed? thanks!

So I am cycling my new tank and I have some nitrites, no ammonia and a lot of nitrates. but I need help on what to do next to make sure it is actually cycled or not. I am listing my levels for the past 10 days: I am using the Red Sea marine test kit for reference to numbers/colors. Day2 May 21...

Rescued this candy cane frag back in 2018, now it looks like a softball. Share yours below! 2018 Now

Hello Reef2Reefers! :D Mixed reef build… planning to only do captive bred fish in this system. Let’s see if I can stick to the plan. lol For this build: The build: Tank: CADE 1800 Reef S2/P Lights: Illumagic Blaze X 180 + Vitamini x2 Skimmer: DALUA GW17 Controller: Felix Smart Pro Plus V2...

Looking for either a Red Sea reefer 250 or the waterbox marine x 90.3. I currently have a cube reef tank and need some bigger dimensions.

Hello everyone! I have a 33 gallon 4ft tank (48x13x12) frag tank. It is drilled, comes with a sump, pluming, return pump DC, T5 4bulb 4ft light, and the stand. Let me know if you have any questions! it is ready to be picked up as I broke it down and cleaned it up. I am located in PA 19025 and I...

Hi guys! We are getting a 92 gallon tank this weekend that we're buying from someone. It's an already established tank, but since we've had the worst luck with parasites we are going to clean it out and let it sit before adding water to it and starting over. That being said, I'm an avid planner...

I want to show you my clownfish! I'm so happy with these cool fish. They are doing really well! What type of clownfish do you have in your reef tank, if any? See more of them here:

I recently got a waterbox 85.3 frag tank, according to the sticker the display up top is about 55 gallons rest is in the sump. was wondering if anyone can share input on colorful interactive fish, nothing too skittish , goal is a reef tank so preferably reef safe or with caution would be good...

Icecap 3K Gyre Pump for sale that I was using until I upgraded. Overall awesome pump and worked very well for my tank. Comes with an extra pair of mesh guards to put over each side. Can be programmed and flow can be adjusted with multiple settings. $125 shipped

ISO shallow reef or taller frag tank setup. Looking to buy used but in good condition. Preferably RR. Preferably 60-90 gallons + or -. Open to working out a deal. PM me. Located in Waukesha WI

Have you ever kept a Christmas tree worm rock? I think it’s my favorite piece (in my 40 gallon shallow reef tank.) and it’s doing well!

Hello everyone, So I got this lemonpeel angel fish as my second fish. I see some white discoloration on their scale by their belly and bottom of fin. Im not sure if they are sick or thats just them since they also have those white/bluish lining on their faces naturally.

Selling my waterbox cube 20. Thought i’d be where i am currently living for longer, but the wife and i decided its time to move. Dont really want to put a 15hr trip of stress on any of the fish/corals/inverts here. $600 obo. Comes with everything in pictures, plus about 120 gallons or so of...

This 317 gallon reef tank is one of the most beautiful tanks I’ve ever seen. So many corals! How much do you think this tank cost? Watch the video:

One year ago I set up my nano reef tank. It is a no skimmer setup and I do water changes of about 10/15% every week. This tank is doing well, but has faced some challenges throughout this first year: