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  1. I have cyanobacteria that I treated by Maracyn a few months ago, but that distinct smell keeps coming back. I can see it in the sides of my deep substrate and it keeps creeping up through the substrate every so often. I stir with a stick and the smell is gone for a bit, but it persists. I don't think the treatment was not able to penetrate the substrate. Would It help if I treated again and permanently blacked-out the sides of my substrate? I have a 29g planted community with about 3.5 - 4" of substrate (pool filter sand covered by crushed coral and aquasoil). Filtration: HOB turned down for low flow on one side, and tiny sponge filter in opposite corner turned down to minimize splashing onto the lid. Stocking: MTS, ramshorns, mini ramshorns, a few bladder snails, 4 nerites, 12 chili raspboras, 6 dwarf corydoras, many neocaradina, 6 amano, two pseudomugil gertrudae. Water perameters: GH is through the roof, but keeping up with KH is tricky. I think the MTS are carbonate hogs with their super thick shells. 🙂
  2. 10G Betta tank with suspected columnaris. Take a look at the pics and let me know what you think about the diagnosis! Onset: 6 days ago, white patch behind his head suddenly appeared. Hasn’t seemed to get worse or better. He is more lethargic than normal, but is still eating and occasionally swimming around the tank (not just up for air). Fin rot seems slightly better now but is still severe compared to what he had before this started. Current treatment: water change and gravel vac immediately and again yesterday; darkness in the tank for four days and now limited lighting, Ich-X (5mL), and Maracyn (1 packet). Left the Ich-X and Maracyn to sit for three days, did a 30% water change and re-treated with both yesterday. (Yes, I did a water change but wasted a couple days trying to figure out what it was before medicating!) Thinking of treating with kanaplex, but have qualms because it’s a heavily planted tank, with a nerite and otos in it that might also suffer or die. Thoughts? This is following a bout of BGA from lack of nutrients, and fin rot from the nasty BGA tank conditions until I got it figured out, killed, and now mostly cleaned up (there’s probably a random dead piece in the gravel). Previous fin rot and BGA were treated with two rounds of maracyn two weeks apart, one round of Paracleanse, big water changes and plant prunings, and more consistent ferts. Tank is recovering and looking much better, but betta’s fin rot is worse again and now he has a big white-tinged patch. He does have the marble gene, and he is just over a year old (he’s been with me a year and was a medium-sized juvie when I bought him). This appeared very suddenly about 6 days ago, more than a week after the last rasbora death. After researching, I found that kanaplex was probably my best bet, but I don’t want to lose my corkscrew vals or my other plants, or my otos, or my nerite, and seachem says it is hard on inverts and plants and some scaleless fish. On other forums, people say most of their nerites survived, and all their plants survived, but they didn’t have vals (which can be more sensitive). Nobody said anything about otos. Parameters: pH: 7.8 Ammonia: 0 Nitrites: 0 Nitrates: 10 Temp: 79.5F KH was high last time I checked it, but I haven’t checked it in a while because it remained steady for a long time and I do regular water changes with tap water and it is fairly hard tap water. I always have to double-dose my Prime because of the chloramines present in my tap water. Other tank inhabitants: 3 otos, one zebra nerite, 2 emerald-eye rasboras (2/4 rasboras died suddenly after I added the otos two weeks ago; no symptoms…betta may have reacted to more stock being added to his happy equilibrium and killed them…or maybe columnaris killed them due to their own stress after the otos). If this was columnaris, wouldn’t the betta most likely be dead already? Or noticeably worse? Wouldn’t the other rasboras or the otos be showing signs of it too? (They’re not, even though I know the rasboras are stressed from losing their school from the way they hang out with their reflections and zip around.)
  3. Shot this rambling video earlier today. I’ve had problems with this tank for awhile. It’s a 40 gal breeder. Cyanobacteria got a grip, so I hit with a mild dose of E. M. Erythromycin after hand cleaning out a lot. Kind of satisfying to see it gone, though I’m far from happy with the tank. Any tips on defeating this “dusty” algae?
  4. I have a freshwater 40ga tan. This purple stuff has started to develop on the walls and a little on a rock (not on the plants yet). Has anyone seen this purple stuff before? Is this cyanobacteria? I've added Chemiclean but so far there has been no change. I'm going to change the water and do it again. I'm hesitant to use erythromycin because of its affect on beneficial bacterial. Any thoughts?
  5. I haven't even noticed, when this blue-green algae first appeared in my freshwater tank. And not it is impossible to get rid of it. I've already read some info on the topic, like https://www.thesprucepets.com/cyanobacteria-blue-green-algae-1378628 or https://thepets.net/how-to-get-rid-of-blue-green-algae-in-a-freshwater-aquarium/ but want to ask for real experinece to prevent killing beneficial becteria. Any thoughts?
  6. Hi Everyone, I'd really be interested in hearing from any of you who have had to tackle blue/green algae or are currently fighting this algae. I know it's not actually an algae but a bacteria. I've just started treatment for mine today with a product called Cerpofor Aerocol which is what my LFS here in the Uk have given me. I have to dose for three days, I'm told it's Ok with my fish. My tank is a fairly new tank and everything has been going fine until this horrible algae appeared, it grows so fast. I think it's occurred because I've put plant soil beneath my substrate, being new to the hobby I thought this would be great for the many plants I have in my aquarium, I regret this decision now. I was leaving the lights on for about 10 hours a day for the plants but this I'm going to reduce to eight once I've hopefully eradicated this algae. I'm also planning on leaving the lights off for the next three days. I do have an air stone which is left on most of the time and a good filter. The carbon from the filter has been removed whilst treating the algae as per dosing instructions. The tank is 100L lightly stocked with 5 Danios and 5 Cherry Barbs which are lightly fed once a day at the moment (I'm strict about the feeding). Daily water readings since the start of set up have been great. I used Fritz Zyme 7 BB to get the cycle going. My readings for Ammonia and Nitrite have been 0 since day one and my Nitrates range from 10 to 20 ppm. PH8 a little high but I have hard water in my area. I have done two water changes of about 20% which have happened whilst syphoning off the algae from the substrate. How have you guys faired with battling this algae. Any experiences or advice is most welcomed. Thanks.
  7. I have a algae that i cant get rid of I am looking for algae eaters does anyone know wich type this is?
  8. I have a 29 gallon tank in my preschool classroom that had been set up for around 4 years. A couple of months ago I had to replace the tank because it got a crack in the glass (preschool mishaps) and decided to change out the substrate and add some more plants while I was moving everything. A little while after moving everything into the new tank I noticed this black stuff all over the place. It seems to be concentrated mostly on the edges of the plants (particularly the anubias), but it's also on the substrate and decorations. I'm not sure if it's algae or something else. I tried removing it by hand, but it wouldn't come off. My otocinclus and pond snails don't seem to be making a dent in it either. The new growth on the plants doesn't have any black on them. So my questions are: What is this black stuff and how do I get rid of it?
  9. Recently got a 55 gallon set up and noticed some algae growth on the rocks. Is this anything to worry about? I recently picked up some snails, a clown pleco and Otos, but they haven't had a chance to start cleaning this up. Didn't know if this is normal algae growth or something to be worried about.
  10. I've got a type of algae in my tank I've never seen before. I've been gone for about two weeks and had a friend just feeding the fish and came home to this anyone know what it is?
  11. Curious. I have a bad/recurring case of Cyano in one tank in particular (which may have also cross-contaminated to our two other tanks? Unsure there...looking for advice to end this completely in all. All that being said I also have a question that relates directly to this AQ Coop Blog: https://www.aquariumcoop.com/blogs/aquarium/blue-green-alga Simply the blog states: "To begin treatment, scrub off as much of the blue-green algae as possible and remove it with a siphon. After vacuuming the substrate and refilling the tank, add one full dose of Maracyn (which is 1 packet per 10 gallons of water), and let the aquarium sit for one week before doing another water change. The earlier you treat the outbreak, the easier it is to eradicate. If the blue-green algae is very thick and widespread, you may need to repeat the treatment several times to completely remove the colony." So on the Maracyn packet, it states to dose for 5 days? Wondering did I read something wrong in the blog or on the Maracyn pack? Or is the direction different in the blog as it writing towards the purpose of killing the Cyano vs. curing fish? And to provide some extra background info: I did do this about 1.5 years ago. When I did so, we went on vacation and my brother & nephew maintained the last day or so of the tank meds. Upon return we had lost 1 frog (2 survived). Unsure if that was due to the meds or otherwise. Also upon return the tank appeared to have No signs of Cyno? But maybe something was re-introduced, or other-wise. A few more details about the tank. I chose the Maracyn route as I understood it is considered generally safe for the African Dwarf Frogs and and the Cyano was all over more or less. I had initially thought it was just algae and that I needed another snail. 😞 Also the sand has plants: some low growing Valisneria (it never grows high, maybe due to the cyano?), a few/two? buce plants, and a sand substrate (horrible with the cyano!). It's a 20L with an Aquaclear 30 filter. There is also an Volcano with some air pumping through it. Currently this tank houses 6 cherry barbs, 2 ADF's, a pagoda snail, 2 horned nerites, and 1 kupa nerite. Much appreciate the assistance.
  12. Hey guy! So I've been having this problem for a while where this black/green/brown film/gunk keeps covering my freshwater tank's plants, rocks, and glass. It is removable but it eventually grows back but I assume it's also not letting my natural plants grow. (I have a mix of artificial and real plants since my real ones just will not grow. I also cleaned two artificial ones for comparison.) Ever since I have bought my real plants they have barely, if at all, grown in general. Honestly, I have no idea why both these problems are occurring, and under in the substrate there are these long spiky like worms as well. Does anyone know what any of these problems are and is there anything that could help? I do my water changes every two weeks or so and my fish tanks temperature is at 78 Degrees F. I have added some pictures which includes my parameters. I also have a penguin bio wheel hob filter as well. Thank you all in advance!
  13. How do I get rid of the algae on the substrate (see photos)? Nerites, Cory's, and Octocinclus pass it by. Any tips?
  14. I got rid of the outbreak with hydrogen peroxide. Switched tanks. Put in more plants. Params looking good. But STILL I sometimes see grain-sized bits attempting to grow...What causes this, does anyone know? I searched but couldn't find anything, but it's like there are little Cyanobacteria spores everywhere, just WAITING to grow~~~~arrrgggghhh!!! Sorry, I don't have a pic right now, just removed a few little dots:(...
  15. So I have found some blue green algae in my fish tank, but now that got me wondering if the algae in my pond is blue green algae. Here are some pics. They are quite stringy and sort of fall apart when you touch them, or at least they are hard to grab. Also when they are at the top of the water bubbles form in the algae. I am really worried about animals and my cat drinking out of it and dying! If it is blue green algae how can I get it out. P.S. If this helps, I had amazon sword that was in the pond but it died because of the cool water. When I took it out it was all dead and decaying and the algae had grown on it. When I took it out it had a bad smell.
  16. Hey everyone, I saw some cyanobacteria on my java moss in my new tank. I think it is from the store I got the moss at. I have never had it so is it bad for me, my fish, or anything else, and how do I get rid of it? Thanks
  17. Has anyone used Melafix successfully to treat cyanobacteria? Ive used erythromycin before but its seeming to be harder to find. I have a small patch starting and I'm trying to find treatment options people have used and liked in the past. I do plan on manually removing what I can see. But id like a water treatment to help ensure it wont come back
  18. I have 5 baby jewel cichlids in a breeder box. They are doing really well. I feed them bbs twice a day. They are 14 days old. I have Cyanobacteria in this same tank. I've been doing small water changes and cleaning up as much of it out of the tank as possible but I'd like to medicate the tank with Maracyn without moving the fry. I'm just not sure if it would hurt the fry. Before I do this though I'd like opinions on if it's a bad idea.
  19. 55 gallon, well established tank.Lighting: 'Edge' light -6 hrs daily. 5 squirts of Easy Green weekly. Weekly water changes including gravel vac on weekends....I replace some water mid week.Bunch plants do ok. Only the Anubias and Java Fern has black spots which do not rub off! I realize it is due to their slow growth. My water is hard although I have a thriving school of cardinal tetras. I have 4 Panda garas and 2 amano shrimp that apparently don't like the black algae. I am looking for a way to get rid of the black spots. Will ottos eat black algae? What can I do to get rid of it? Thanks All! I
  20. Good Morning Everyone, Wondering if anyone experienced can look quickly at the pictures and let me know what's going on? The plant in my 10 gallon have just started to develop these blotchy areas. If I had to guess, I'm thinking it has something to do with the intensity or duration of light. However they seemed happy for months before all starting to do this. Just wanted to make sure I understand what's going on before trying to remedy the situation. Thanks in advance, Grant
  21. Happy New Year! I am in the process of cycling 12 new tanks. Several of them are cycled. Most have only pest bladder snails or a few Nerites. No fish. Four of them have cyanobacteria, which I merrily spread through the tanks by moving an infected square of Java Moss to see how it looked. I have been spot treating with Hydrogen Peroxide and manually removing the small patches, which I can smell even with the lid closed. Burns my nose. Affects my breathing which isn't good to start with. Now here is where it gets confusing for me. I am stocked up on Maracyn and want to treat the tanks. I am gearing up to slowly stock the tanks, which range in size from 20 gallons to 5.5 gallons. Since there are no other occupants of these new tanks, can I move the first batch of fish directly into their permanent homes, rather than the dedicated quarantine tanks? Can I wait to treat the tanks for Cyanobacteria with Maracyn until after the first fish are in place, since I would be treating the fish with quarantine trio anyways? Then I wouldn't have to do it twice. Any help with a strategy appreciated.
  22. could someone help me identify what I’m dealing with here. Black growing between the sand and glass. It seems to have a cyano texture when I have tried to remove it previously. The black on the edge of the tank has looked like that for months and not changed, but where the black is in the middle has grown over a couple of weeks. I am working on balancing the tank . Just not sure if this is algae or cyano bacteria as it isn’t green ? But doesn’t look very nice at the for front of everything! @Cory Thank you 😊
  23. on my 75 gal planted tank my bio load is small 4 angels and 6 baby rams a cpl corys and a cpl more algae eaters dont know ther name and two timy bristle nose plecos. anyway i was always at 0 ppm nitrates so i didnt think i had to do a water change to much i even seen Corys video when he showed the last tour of his shop because he was moving locations and he said the big bins in the middle that he never changed the water. well i ended up with that cyn dont know the real spelling but blue green algae but i watched another of his videos and learned to fix it with erthromyacin . to make a long story short id like to know how i got it. was it fish waist built up? also another question about simple green and iron it has .13 iron and your not supposed to go over 5 does that mean if i dose twice a week id be overloaded with iron? or does the plants eat it up? thankyou everybody.
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