nano 20g

Hi folks I have this lid that I got made from top lids for my aqueon 20 long and I realized something way too late and that is that I need an ato for my tank and now I dont have anywhere to place it. Some people said to lower the water level for my ato but is there a way to put the ato on the...

G'day everyone, Starting a build thread for my new Waterbox 20 AIO. Not my first marine tank - I ran a small AIO from June 2016, upgraded to a Red Sea Reefer 250 in December 2016, and shut that down in September 2022. After a 3.5-year break, I'm back at it with something smaller and more...

Hey reefers, I have a 20g long that’s been running since 2021, and I’m thinking about re-aquascaping it. My main reasons are improving flow, reducing dead spots, and giving my clown more places to hide. Right now, I’m running a two-island setup, but I want to switch to a more centered rock...

Long story short, I have a 20g long with a Nero 3 and an AI Blade. They’ve both been working well, and I haven’t really had issues with them. My tank has been running for a few years and was doing great until life got busy (kids!). It didn’t get the attention it deserved for a while, and I’ve...

Moving sale Located 77493 Katy TX Ecotech XR15 PRO G5 w/ RMS kit $440 Opened box never used . Redsea nano max w/ stand $300 will add more later

Hey there! I have a 20-gallon Innovative Marine Drop off tank. I own a Harp tail Blenny and two bonded Clownfish. Recently in the last month, I had purchased an Indigo Dotty back that I had ultimately ended up bringing back to my LFS. He was such a gorgeous fish and was super bold and fun to...

What's up everyone, My name is Jacob, and I currently live in Hong Kong I used to have a small tank, but it crashed right after my BTA got shredded in the powerhead. Really tragic, but I'm ready to jump back into the hobby. Below is a photo of my new tank, if anyones interested. It's a RedSea...

Hello friends! I’m based in the UK and just purchased a RedSea Nano 20g (second hand). I’ve done a lot of research and I know that RedSea have some issues, but the tank I’ve bought seems in really good condition and the guy I’ve bought if off had a genuine reason for selling it. There’s...

Hey fellow reefers, I have a 20-gallon long tank that’s been running since 2021, and I’ve been having trouble getting any phosphate readings lately. I’ve been tracking my parameters daily for a week now and dosing nitrate, magnesium, and phosphate (all Brightwell Aquatics products). That’s...

I had a build thread so long ago but only came back into reefing maybe 4 months ago. I did have a 6g but after that got stocked decided to pick up a used IM 20G fusion. Posting here whenever new pieces come in and just for colour and growth updates. Sadly all the acros are browned out but im...

Hi Fellow Reefers, I have a 20-gallon long tank that’s been running since 2021. For a while, it was on the back burner due to family responsibilities and going back to school for my master’s, but recently I’ve gotten back into proper husbandry and it’s really revived my passion for the hobby...

Hello all, as the title states I’m a new comer to the hobby (and reef2reef) and I figured I would document my progress with my first tank. It will be a bit before she really gets up and going as I’m a merchant mariner and can’t start for a few more weeks, but soon my boots will be on solid...

Hi all I have a 100lt/20gal AIO tank. It is 1.5 years old. I have two clownfish and a few corals. I run a Redsea ato (worst purchase ever) and I have a Redsea 4head dose. I cannot get my phosphate or nitrate above 0.01-0.02 doing weekly 10% water changes. So I have this ugly brown algae, that...

Hello all - my name is AJ and I am a lifelong aquarium hobby enthusiast with most of my experience in freshwater setups. I used to keep a SW nano reef in high school (which I spent all of my lifeguarding money to keep and maintain) and now that I am in my 30s and finally own my own apartment, I...

How do I get rid of it if it's bad?

Hello all, I am Moving from the Bay area to Idaho within the next month and have a fully stocked 20 gallon reef tank running and want to bring it with me. I have probably around 50-60 individual corals in the tank and a light stock list. My best idea that I have in my head is individually...

Finals are finished and I’m officially on spring break. I recently just found this bad boy in the basement (live in a townhome with a shared basement) and figured what would be a better use for it than…a stand for my aquariums. So I came to the conclusion that having a 20H completely full would...

Redsea max nano 20g aquarium used for less then a month then put back in box went a different route! Tank only asking $250 local pickup San Diego

I’ll keep this build thread short and sweet. I currently live in a 50 gallon mixed reef lagoon system. this system is about six years old and my sand has completely ticked me off which has cause neglect which has in turn caused it to all turn to limestone due to my dosing schedule. SO…. I have...

Got a little upgrade from Fluval Evo 13.5 to IM Nuvo Fusion 20. I transferred some of the rocks from the old tank to start. I added a couple of fishes and corals.

Hey all I’ve made a couple threads now. Still learning how to use forums. I’ve had a few tanks in the past but I’ve failed due to budget. I found a deal on this jbj that came with an AI prime. I was originally going to do a Caribbean biotope but after further research I’m just going to do...

Have been busy with Uni and Work and now in my final semester and I have more free time now. I am studying Marine Science and I have had the privilege of conducting field work at the Heron Island Research Station on the Great Barrier Reef, working at an Aquarium shop and visiting Coral &...

Hi, sorry if this has been posted already, I’m really new to this website and the hobby in general. I’m building a coral-only tank without fish. I currently only have Duncans, and they seem to be happy with the lighting and temperature. I’m using a SMATFARM 95 watt light. However, I don’t...

Latest FTS 05/31/2026: Hello, new to the reefing scene and excited to get started! I've been a freshwater planted tank aquarist but have always been drawn. to the allure of saltwater. For my first tank, I wanted it to be a budget build nano tank, as I rent, and I wanted the move to be...

BUYING The FIRST FISH for My 20G SALTWATER AQUARIUM!!!