r/algae

I go paddle boarding with my friends in this pond frequently and we have noticed in the last week an algae that has kind of taken over. We typically swim in this pond because it’s really deep and typically very clean. We are holding off on swimming for now because we can’t figure out what this algae is. The algae floats right beneath the surface and clumps into balls. When we touch it with our paddles it doesn’t stick to them, but explodes and disperses. It seems to collect kind of along the edges of the pond where there is more growth. The little stream that we take to get out onto the pond seems to be clean, so I think the cattails on that part are doing a nice job keeping it out. Any input and expertise is welcome!

HOW DO I STOP IT ITS EVERYWHERE I REMOVE AND REMOVE

I’m currently on a backcountry canoe trip. This lake is the only source of drinking water. Me and my dog have been drinking this water (treated with Aquatabs, which I know is not effective against blue green algae) for 24 hours already, prior to finding this near the shoreline. The water was taken from the middle of the lake about 1-2km from where this was found. I assume this is blue green algae?

Any help ID'ing these gelatinous sacs, with small green balls? I think it is next to a straight chained anabaena.

I have seen these in my Asterionella cultures. They are not axenic but they have always been clean with only Asterionella inside. I started seeing these recently. Are my cultures contaminated? Are those eggs ? If anyone could help me identify those out that would be fantastic!

I have checked fluorescence and didn't see anything in particular.

Thanks for your help

I'm sorry, I doubt this is the best place for this post, I just needed to share this somewhere to get it off my chest and I don't know where else to go haha... delete if this isn't allowed!

I know it's not the best, most detailed photo.. but do we think this pool might be growing blue green algae? The owner of it has three young children, a dog and a cat. and it sounded like they were splashing it with a stick or something earlier, chucking dog toys in and giving them to the dog.. I was unaware when I heard this happening that this is what the pool actually looks like lol ugh

I am fully aware that it's really none of my business haha, but yeah, when I eventually glanced out the window, this is what I saw.. I'm hoping it's regular algae and there's no serious danger lurking in this swamp that could hurt her family or pets...

I'm now sticking nets over all my windows to try and stop the inevitable mosquito army getting in my house haha wish me luck! RIP PEPPA PIG 💔

Behold

I know the full bloom usually covers the surface of the water but does this look like the beginning phases of a bloom? I’ve never seen this kind of algae in the lake before.

For reference it is a small lake, the water temp has been about 75, there’s nothing posted about it on the local public beach page, and we’ve noticed it more so towards the middle of the lake rather than at the wadding point.

This was at the edges of the Nehalem River, any thoughts on what it might be?

It seems that excessive lighting over the past week might be the cause. Could this be brown hair algae? I have 3% hydrogen peroxide and intend to dilute it with water at a 1:10 ratio for a one-minute soak outside the tank. Would this concentration be too low or too high?

It's a 2-month tank.

Hi, I am a biologist from spain just getting into freshwater algae. I picked up this specimen in Cantabria (northern spain) from a basic rock type on the river margin, where the water was very slow. It formed a thick coarse mat with a texture similar to wet hair (not mucilagenous).

After hours looking into the guides available on the web I think that this may be part of the family Chaetophoraceae, but the chloroplast localization (both cell tips on the filament's axis) does not coincide with the usual parietal positioning of the chloroplasts of Chaetophoraceae.

Also, that slight thinning in between some cells seems pretty strange for me.

Some filaments reach up to 8cm long in a single line of cells.

It seems to have...heterocysts?

Anyone has got any idea of what this could be or has any pdf guides to share with me?

Thank you all very much!

https://preview.redd.it/nxg8x1w731ih1.jpg?width=2308&format=pjpg&auto=webp&s=c4e018a0752bdc7c3ecbdafc144eb6d263ebc24f

I have a rooftop garden (zone 3) and I’ve accidentally grown something in an old plant pot that got filled with water. Would love to know what it is, if anyone recognizes it.