fluval 123

After joining the hobby 2+ years ago in 2020 with a Fluval Evo 13.5g I decided I'm addicted enough to upgrade to a larger tank so I can keep more corals and fish. I shopped around a lot looking at various tanks both off the shelf and custom, my ideal would be custom but I really don't want to...

Hi. I have a Fluval Flex 123L which has been running for about 1 year now. I have always had a major green hair algae problem which I just put down to the fact the tank was new and going through the motions. I work offshore so I'm only able to do a water change once a month which is a 25%...

Hi, I have a Fluval 32.5, and the surface sludge is really annoying me, lol. Is there a way to fix it on this tank? I have the Intank media baskets, and it’s annoying I have to have the water level high, and there’s sludge/particulates always at the top (also I wanna improve the filtration in...

To be honest. I'm pretty disappointed. Usually I give products and companies the benefit of the doubt, and I do not like to criticize, so I'm sorry. The fluval 32.5 filtration on paper looks like it should work. Separate from the stock sponges I have a couple concerns. First off I have had the...

Hi, welcome to my journey This is my Fluval flex 32 gal tank. First I wanted and was looking at the big cube 29 but as I was searching endlessly different nano tanks I was so close of buying the cube. But I went to my local fish stores which I try not to go back they told me that tank sucks...

Hello, I am new to this hobby and want to ask if the fluval flex 123 marine is a good choice? Is the filter good and the light enough for some corals like anemona? ( i want a great aquarium so do i need to change something or these components are good enough )

Hey everyone, pretty new here but I am a long time lurker. I had a 60 gallon FOWLR tank running since 2010-2011 and decided to shut it down for a smaller tank. I wanted an AIO and went with the Fluval Flex 32.5 Saltwater kit. I am really liking it so far but, at times I wish I had my bigger...

I’m a beginner to marine and look forward to learning and enjoying the hobby. I have kept cold water and tropical for many years, this is the first time I’m doing saltwater. I feel like a bit of a cheat on the build thread as the tank has been going for a little over 3 weeks now. Setup Fluval...

1st I've ordered media baskets for the tank. Looking at chemipure blue 5.5 Oz is rated for 35 to 50 gal. So using it is a little over powered, but not super over powered. But that will go on the media tray on 1 side. Filter floss will go in top of both, but the basket with the blue will have...

I have had my Fluval Flex 32.5g tank set up for about 7 months now and always battled heat. My tank ran in the 81-82 degree range and actually did fine, but I finally decided to get the heat under control so I can start trying some more finnicky corals. I got the idea to add PC fans to my rear...

so looking at getting my first saltwater tank and like the all in one kits like the fluval flex 32g. but ive seen alot of people saying the pump and filter doesnt do the job. if i was to get this tank what upgrades are essential for some beginner coral and a pair of clowns. thank you

Hi R2R, After 8 years of break I am now back with the hobby - and I am excited :) In this matter I came across this forum and looking forward to both find and share inspiration for this hobby in here in the future :) This time I am looking into starting up a AiO tank with the Fluval Flex 32,5...

Hello All! I’ve decided to start my first ever reef tank after spotting the AIO Fluval Flex 32.5 Gallon Tank Kit (Aka Fluval Flex 123L). Figured the all in on (AIO) was the way to go since I’m a first timer and the setup seemed pretty simple to grasp. However, after reading about this tank from...