reef tank

I am Geas, actually currently writing a book on reef tanks for beginners and I could really use a couple of reviewers for 2 of the chapters in the book,In exchange for acknowledgment in the book, a complimentary final copy and possibly credits by name or username. let me know if you would be...

Selling a Red Sea Reefer 450. Bought this new 12 years ago. This is what the Reefer 525 was born from. Aside from the glass tank itself, nothing is OEM. The stand has quite a few modifications to accept all of the custom plumbing, dosing lines, sump, reactors etc. I also modified the...

Selling my custom-built 235-gallon corner aquarium setup. This is a large, unique tank designed to fit into a corner and includes the matching custom stand and hood. Included: 235-gallon acrylic corner aquarium 48" radius × 30" tall Heavy-duty acrylic construction 3/4" acrylic sides 1/2"...

First time posting and might need some help to figure out how to upload the video. 😅😭 I have never seen my tang do this before. What exactly is going on here? Is this flashing, territorial display, just my tang being ridiculous? He will swim around the tank looking for food and then swim back...

Hello all, I had a question about plumbing a macro algae tank for display to my main display tank. My main display is an aio aquarium and I would like a display macro algae tank beside it. I can’t use an overflow on the macro algae tank since itll be lower than the main display. Does anyone have...

I’ve kept both of these species for this particular job in my reef tanks and they each have their pros and cons, I think coral banded shrimp have a bigger appetite but this can make them more aggressive towards other reef inhabitants, and while I love arrow crabs I feel that they can’t get into...

I’m selling my Innovative Marine 50 EXT reef system after upgrading to a larger tank. This setup was only running for approximately 3 months, so everything is in excellent, like-new condition with very minimal wear. It has been meticulously maintained and is ready for its next owner. I’d prefer...

Selling a great condition Red Sea Reefer 200XL G2 - black stand. I installed a white 1/4" HDPE bottom that is chamfered to sit flush with the silicone line. Great for bare bottom or for protecting the glass bottom from your aquascape. $950 picked up in the 61761 I can also make a package...

I will be moving soon and wont be able to set back up immediately. With that said I need to sell my complete setup, and would prefer to sell it that way due to the livestock. LOCAL PICK UP ONLY Up and running complete setup. All equipment was brand new when setup March of 2025. The lights...

I didn't see too many posts about the Eshopps Mariner M40, so I decided to share my build and hopefully answer some questions for anyone else interested in this tank! I am coming from a previous well established 5+ year old slightly smaller system, and I wanted to minimize any "cycling" and...

Waterbox reef lx 320 rimless, built like a tank. Drained, and I'm in the process of cleaning it. Pickup West palm beach 33411.

Getting Out of the Hobby – Complete Reef System Sale It honestly breaks my heart to write this post, but I’m getting out of the reef hobby. Since moving to Ohio and found new passions, I’ve simply lost the time and interest needed to give the tank the attention it deserves, and I’d really like...

Selling Bubble King Deluxe 250 skimmer. Bought new in 2024 and have used for about a year. Everything runs great! Best skimmer ever owned in 30 years in hobby. Sold tank and now selling equipment. Note: The neck of the body cracked during shipping and I epoxy welded back together with no...

Good morning everyone! I'm working through selling my 330 gallon reef tank setup, I'll keep this list up to date as I sell things. Not looking to ship anything currently, so local pickup only. Livestock: Fish: 6.5" Blue Hippo Tang 4" Yellow Mimic Tang 4.5" Purple Tang 4.5" Achilies Tang 5"...

Hey Reefers! I don't know why I haven't gotten around to it, but I'm starting this build thread to follow my 60g IM build and progress. I started my reefing journey in 2017 with a 32-gallon biocube (still running, currently housing my OG clownfish and golden cuban basslet, platinum white), and...

Anyone have any suggestions or tips on what to do when upgrading to a new tank i feel as it’s a 90 gallon upgrade since i currently have a 90 and moving the stoc into a 180 what kind of tips do you guys have for the least amount of issues

Hello all, About a week and 3 days ago I added a Yasha goby along with a red-banded pistol shrimp to my reef tank. I left them in a breeder box during the day to get them acquainted with each other without interference from the other fish, and put them into the tank fully when the lights went...

Located in Clarksburg, MD and I go to Woodbridge, VA once a month. Local pick up ONLY! FREE coral frag with multiple purchase or big item purchase! *Will discount on multiple purchases. Note: Will not respond if being asked by default “if this still available?” To reduce scam message...

Hello, Like the title says I’m looking for advice about culturing phytoplankton. I’ve tried to start a culture a few times before and the same thing always happens. Here’s the information about the culture: Starting volume: 16oz - started with 1:2 ratio of phyto to saltwater. Started growing...

Instant reef for your tank that will include a varity of coral People say I am crazy but I say why not 😀 #1-sunkis Bounce Mushroom 1” #2-RBTA ( red bubble tip anemone) #3-10 Radioactive dragon eyes zoa #4- miyaga tort frag 3” high multi branches #5 -finger leather #6 - orange digi frag 1.5”...

Just torned this down in November, it is filled with fresh water right now and still running. need cleaning :) Here are tanks and setup: asking $1,750.00 Pickup only. I am in San Mateo California. Glass tank (peninsula - black and left side is black) no iron glasses. made by Crystal...

Everything. Fake box fish, fox fish, coral beauty, mini hawk, flame hawk, wrass, molly, yasha goby, coral shrimp and lots of fake coral. This is a custom tank with 1/2 inch acrylic and heavy duty acylic sump. A dcp 5000 sine wave return pump 2 new power heads, sump lights, 5 month old 135 watt...

bug in question, image hosting site is postimages since it came up first. this dude showed up on my GSP in a little barnacle/tube worm looking growth on sunday, noticed in the morning when I was switching lights from night to day the polyps on the GSP were all hiding, waited an hour and came...

Icecap 40W UV sterilizer. Purchased April 22nd, installed beginning of May. Ran intermittently until about 2 weeks ago when I upgraded to a larger unit due to my tank size upgrading. (Prob ran the equivalent of 3 months). Works as it should, no issues at all. $150 PLUS $20 shipping. (Also...

Hello everyone, my name is Nik and I’m from little Switzerland. I’ve been on the forum for a while now and I’ve learned quite a lot thanks to many of you. It’s always interesting here – I really like the community, and you keep giving me new ideas for things to try or improve. So why am I...