Jump to content

Search the Community

Showing results for tags 'hydrogen sulfide'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • General
    • Community Resources
    • Introductions & Greetings
    • General Discussion
    • Photos, Videos & Journals
    • Plants, Algae, and Fertilizers
    • Fish Breeding
    • Diseases
    • Experiments
    • Aquarium Co-Op's Local Announcements
    • Aquarium Co-Op Events
    • Forum Announcements
  • Off Topic
    • Off Topic General


  • Daniel's Fishroom Blog
  • Music
  • Music for Fish


There are no results to display.

Product Groups

There are no results to display.

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start



About Me

Found 6 results

  1. So my well (dug 1 year ago) suddenly started having a STRONG rotten egg smell, which I have been told is hydrogen sulfide. I am going to try to treat the well with bleach over several months as recommended, but I have no option but to use this water for my water changes. (I have 10 tanks ranging from 10 gallons to 75 gallons so buying water from the store is not an option). Does anybody know of or recommend any additives that may help reduce the amount of hydrogen sulfide going into my tanks, so my fish might survive this? Or any other recommendations in general... I do have carbon filters on my well, and as I said am treating the well itself with bleach as recommended. I am looking for an endpoint solution. Thanks in advance for any ideas!
  2. Well I done did goofed, forgetting to plug my canister filter back in after a water change, making it go anoxic for over a week. I thought I'd share my experience in case anyone else runs into the same or similar problem. I'll explain what happened, what I did to get out of it, and what I'd recommend for anyone with canister filters to do to prevent this. I'm not here to litigate whether or not canister filters are good or bad. This situation was 100% user error and can be easily avoided. Background: The aquarium in question is a 40 gallon breeder with a Fluval 206 canister filter with spray bar and intake sponge, as well as three sponge filters for additional flow and surface agitation. This is my fish-for-profit tank and is HEAVILY stocked with guppies and bristlenose plecos. I do water changes about once or twice a week and have a dense growth of hornwort and pothos to help me with water quality. It's a utilitarian tank, not a display tank, and I don't bat an eye when the water goes cloudy as long as the fish look healthy. The Event: I start my water change. As a pump withdraws water, I go underneath to unplug the canister filter, and I find that it's already unplugged. To make sure I'm not just having a forgetful episode, I feel the side of the canister filter to see if it's still warm; it's cold. I recall that the last water change I did was 8 days prior. Fortunately, I already know what that meant for the state of the canister filter. The Problem: Beneficial bacteria in your filters need oxygen from the water to process ammonia and nitrite. When you cut the flow of oxygenated water to them, they die after a few hours. Leaving your canister without water flow for a few hours won't kill your colony, but once you start looking at days without flow, there will be no oxygen left in the enclosed system. I knew that after 8 days, all beneficial bacteria in there would be dead. It'd be no use to plug this filter back in. I also knew that between all the fish waste trapped in the sponges in the canister, the now-dead snails that lived in the filter, and the dead beneficial bacteria and the anoxic conditions, it was highly likely I had a strong colony of anaerobic bacteria going in there, feasting on rotting organic material. I have a degree in civil engineering, and my senior design project was building a small scale anaerobic digester to process solid organic waste into useable methane. It was a fun but stinky project, and an experience that really helped me deal with this situation. I knew that the canister filter was now full of dissolved hydrogen sulfide gas (aka sewer gas) and other nasties. I definitely didn't want to plug the filter back in and have it dump that gas and decaying organic matter into my money-making aquarium. The Solution I Used: I disconnected the 206 from its hoses. It's really nice that Fluval's canister design makes this easy. Already I could smell the hydrogen sulfide gas from the filter. I then took a bucket, placed it underneath the detached hoses, and opened up the shutoff valve to back-siphon all the stagnant water out if the hoses. I did this until the water ran clear. This water also stunk of hydrogen sulfide. I started to attempt to clean the filter indoors....that was a very bad idea. That gas will stink up your home, make you want to puke, and it's very hard to dissipate. I've smelled open sewer manholes and wastewater treatment plants that were more pleasant. My advice is just take it outside asap. I'll post a follow up on how I cleaned up the filter and dissipated the gas from my home if people are interested. My Recommendations For Prevention: 1. Place your canister filter on a Kasa Wifi Timer. Schedule an "on" to recur every night at 1 am (or whatever works for you so it doesn't kick on while you're in the middle of working on the tank). That way, when you change water and turn it off, you can hit a button on your phone. If you forget to turn it back on, the Kasa will always kick it on at the time you set and you're not looking at days without power and flow. 2. If you're experiencing a prolonged power outage, take your canister filter media out and either place it in your tank or a bucket of water to keep it from experiencing anoxic conditions. 3. If you do notice your filter has been without power for a long while, don't immediately restart it. Assess the state of its contents (your nose will tell you if it's as bad as mine got). 4. Redundancy in your filter systems can save you headaches. My 300+guppies and 6 plecos appeared to have thrived despite the big canister filter being out of commission for 8 days. The sponge filters and plants in the tank kept it so I only had a small .25 ppm ammonia spike as opposed to something catastrophic. It also kept me from noticing that there even was a problem so there is that to consider.
  3. Even though my parameters were all good, and nitrates were below 10ppm, I did a 50% water change in hopes of helping my betta out. He's been not eating, and I'm curious about his swim bladder due to visual and swimming peculiarities. I typically don't do this, but I removed all the decorations before the gravel vac. That obviously stirred up the substrate and all the debris. And there came this very strong smell. I've heard this type of smell describing a tank with high ammonia. But I was measuring 0ppm. Was this just the smell of shaken up waste? Did I give my tank an ammonia spike by doing that? Was this the smell of mulm from my possibly decaying IAL? Anything I should do or look out for?
  4. Hello all, Because I will be moving, I decided to rehome some of my stock, but definitely not all. I sold off my shellie colony and as I cleaned out the sand, I noticed that the shellies built up a little sand mountain on the background. When I removed that area of sand, the background appeared stained black, just like some of the deeper sand itself. Question is, now that they are gone and most of the sand is gone, will the black stain on the background go away. I believe it’s a hydrogen sulfide stain. Do I need to scrub it to get it off or will snails eat away at it little by little? Does the water flow help alleviate the issue? Any and all feedback is appreciated. ps I can post a photo tomorrow as I didn’t have my phone near me when my arms were wet. I’ve lined some ez planters in front of it to make it not so noticeable, however tomorrow I will be doing a water change so I can snap a photo. Thanks again
  5. Hello, I was doing a water change today and noticed as I was gravel vaccing that the water coming out smelled of sulfur. So me being the "ill just see what happens" type of person I am I grabbed my planting tweezers and started running them through the substrate (4 inches of gravel) and sure enough bubbles would rocket to the surface and release a sulfur smell. Now I don't know if this was the correct thing that I should've done ,but I thought it would be safe to do as I was doing a larger water change than normal (knocked some food into the tank the rest you can probably guess what occurred). So will the fish be fine or should I go ahead and do another water change this afternoon? (the water doesn't smell of sulfur now) I usually gravel vacc but I skim the surface rather than deep dive into the substrate where I don't disturb the root tabs or root systems of my plants. Do I need to keep watching out for gas build ups in the substrate? What is the gas building up technically? Should I keep doing deep gravel vaccs to release the gas or just make sure I turn the substrate every so often?
  6. hey, I have just started keeping sand as the substrate with aquariums and I understand that with deep sand beds it can release deadly toxins and so you need to push the substrate around to prevent it. If I add corydoras/ geophagous will I have to push the sand around? Or as they scurry around the sand, will they do it for me?
  • Create New...