established tank

I currently have a 20g AIO IM. I have a filter sock on one side and a media basket in the other side, my tank is dry sand and rock and has been cycled for a couple months now, I kinda regret not using live sand but oh well. My question is, I've been debating using my empty media basket (besides...

Hey everyone, I have 50lbs of rock sitting in a barrel of saltwater in my basement for a little over a year. The water isn't heated but basement temp around 60 degrees. The rock was in an old tank with bad algae so rock was bleached, dried and been in the barrel of saltwater ever since as...

Established tank, about 13 months old. Started getting orange film on just one rock. Film is hard to remove. What is this and how I get it under control.

Hey everyone, I'm just about done cycling my new tank and adding fish into it. My question is this, I mostly have softies with some LPS and very limited SPS in my existing tank (which will be decommissioned after new tank is complete). Many tanks take a while for stability before...

HI I'm new to saltwater and am starting with a 20g tall until I move to a bigger place next spring where I'll set up my 80g and use this as my QT/hospital. I have my eyes on a condy and tube nem, so im wondering how long to wait until adding them? What exactly is it they need an established tank...

Looking for some ideas!! I have a 30 gallon reef aquarium that crashed a few months ago, lost everything except 2 clowns that I have since moved to another tank. The tank is much better and I am now considering stocking it again, but I want to do a species specific tank. Any Suggestions??

100 gal mixed reef, 7 years running. Redsea reefer 450 Vertex upgraded lighting to scitronix 550 "black coral" maxspect gyres for flow Apex controller

Hello, I have a 100g tank with a 34g sump. I've had it going since October 2020. Recently, I've added a new dry rock and 2 media bricks. I haven't tested ammonia in a long time. The red sea kit I have, I purchased in July of 2020. I just tested ammonia because a firefish I have, I haven't...

Can someone help me distinguish what this is? I'm praying this isn't the Big D?!?! Tank is a Waterbox 70.2 (55g total water volume). Live rock and sand has stayed with me as I slowly upgraded tanks over the past 8+ years. I do not have a microscope yet to properly identify, but on the sand bed...

First post.. so I recently purchased a (what I was told) 2 year established tank with 120 lbs live sand, 100 lbs live rock. fluval 1200mm light bar(replacing as it is junk but it came with it) I’m running fx6 and cascade 1200 canisters being it’s not drilled. And a Sea clone protein skimmer...

I just got this tank from a friend about a month and a half ago and the diatoms just went crazy about 3 weeks after setting it back up. The tank has been established for well over a year. I got 2 oscelarous clowns a cleaner shrimp and a small goby, 5 astreas snail 5 nasarious and a few other...

I have a few question about salt additions to established tanks. What happens if I just add salt to an established tank and let the tank mix the salt? Fish die? Precipitation? Other? What happens if I mix some salt in a container with RODI water and then just add it to the tank? Why is salt...

So I’ve had a 75 gallon tank set up and running for two years. Had no fish, live rock, sump and one mushroom coral. Wasn’t doing much with the tank just had it there was so busy with work and other things. Freed up some time getting back to the tank did a 25% water change added Fiji mud to the...

So - I keep hearing one needs to do x, y, z before adding (insert difficult to keep coral or fish here). I wanted to see what everyone thinks is the MOST important thing. I've heard every one of the choices below - so I'm interested in what everyone thinks. If you have another factor that you...