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  Topic Review (Newest First)
06-01-2013 08:28 PM
sumer After fighting it for almost 5 months, I think now I understand it.
It mostly attacks plants with needle-ly leaves (As Tom pointed out).
It becomes aggressive if dead fish goes unnoticed. (Maybe ammonia burst helps it)
Cutting on ferts doesnt help.
It hates sudden light fluctuations. (I made my light go off for half an hour twice during 7 hour photoperiod randomly)
I think it's spores go and settle down in the filter. Clean your filter every 45-50 days.
Spot excel dosing helps.
Florida flagfish and hungry guppies eat it.
05-30-2013 01:48 AM
flowerfishs That's a lot useful information. I wonder how people treat the SpiroGyra Algae now, since this thread is very old.

Chemical or fish?
09-08-2010 05:16 PM
Originally Posted by bsmith View Post
Does anyone else find that Fissidens is a great place for this algae to reside?
Thats exactly why I got rid of my fissidens. Too lazy to keep fighting it off. I won the 1st battle and the 2nd time was too much work.
09-08-2010 04:20 PM
prjct92eh2 This seems to be the definitive Spirogyra experience thread, so I figured I would chime in. I had a case in both my 38 gallon and 10 gallon tanks. Both were brought on by a mini cycle caused by me removing too much bio material (whole carpet of HC in the 10 gallon, and mechanical filters in the 38). I tried everything to get rid of it: reduced K/Fe did nothing, reduced photo period/intensity did nothing but slow plant growth, 2 day blackouts hit it hard, but nobody likes looking at a black tarp instead of a tank Tried an Excel and H202 regimen, caused green water. Needless to say this was over about 6 months and I was getting really frustrated with the hobby in general. Finally I gave in and bought Tetra Algae Control. It says on the bottle it's safe for fish and plants, but not inverts, and since my angel fish ate my amanos in the 38, i figured I'd try it out. Did my weekly 50% water change, manual removal of the stringy crap and dosed the recommended drop per gallon. Within 3 days any remaining Spirogyra was turning grayish and looking really weak. Continued dosing the stuff every other day at a drop per gallon and by the next weeks water change all but a small bit of the stuff is gone. I'm now 2.5 weeks post treatment and the plants are thriving now that the Spirogyra isn't blocking their light. I'm back to normal EI dosing and the tanks look great. So that's my 2 cents. If you are at wits end like I was and don't have inverts you may want to give that stuff a try.
03-14-2010 06:49 PM
Originally Posted by sunfire99 View Post
As of today, I can't find any of this crap left where it had been. There is a small amount of totally dead threads clinging to a rock but it is brown and falling apart and only about 1/2" long. I actually used a magnifying glass to have a good look for it where it had popped up, and absolutely no sign of it except that dead patch. My thanks to those who posted their experiences in this thread. That treatment seems harsh but worked for me as well.
Note, this does not solve the root problem.

Why you had algae to begin with

Tom Barr
03-14-2010 05:28 PM
max chavez So, I had some flame moss that I wasn't that attached to, with a medium infestation of spiro. I stumbled across this self-proclaimed 'unorthodox' method, and figured I'd give it a shot.

"What you need are some bleach, water, moss, and algae. Mix about 5% bleach solution with 95% water in a container. Throw in the moss. Throw in the algae. Stirr them around in the bleach solution, and wait for 2 minutes. If the algae is soft algae, it should be 'bleached' by then. If it's the tougher Black Brush Algae(BBA), or Hair Algae, they should turn to a pale colour and would die later. Take out the moss and rinse a few times to make sure that the residual chlorine has been remove. Alternatively, you could dump the moss into another container and add in some anti-chlorine solution. After this treatment, your moss will be as good as new. "

I mixed a 4% bleach solution, soaked the moss for 2 min. Rinsed in 3 changes of tap water immediately, followed by 2 one hour soaks in a 1 gal bucket with dechlor. The algae strands did appear a very pale lime green, while the moss looks as vibrant as ever. When manually removing the algae, it did appear a little more brittle than before. We'll see what happens in the next few days...
03-08-2010 07:32 PM
MrJG I'm pretty sure the method that I posted for eradicating this stuff will toast most mosses. You could maybe try a more diluted solution of Excel and peroxide over a longer period.

I didn't have any problems with Fissidens for some reason but as long as you avoid direct contact or a very close to pure dose of excel right on it you might be able to get it to pull through.
03-08-2010 06:57 PM
max chavez Hey all,

It appears that I have some spirogyra that is confined to a free mass of flame moss. Any thoughts on how to best treat it out of the tank?

02-04-2010 03:49 AM
bsmith Does anyone else find that Fissidens is a great place for this algae to reside?
01-10-2010 05:32 PM
snoop-a-loop Well I have had this algae for quite some time now...its not really taking over the tank but thats only because I manually keep getting rid of it almost every day. I will be trying some of the methods used on here, the only problem is that it is in my 72 gallon so 1ml/gallon will add up quite fast. If that treatment doesn't work I will be getting a flagfish or two. And finally if that does not work I will do a 2 week blackout (not sure what I am going to do with my fish). This algae is very very frustrating, makes me want to completely start over but I don't think that will fly with my wife/cash flow haha.
12-12-2009 02:31 AM
Bonefish Well, the H2O2 and Excel treatment along with not dosing K/Fe seems to have zapped most of my algae. I can't confirm with 100% certainty that my algae really was spirogyra, but it looked and behaved like it.

Also added an Amano shrimp and cherry shrimp today, which (I hope) will eliminate any remaining algae.
12-11-2009 01:53 AM
what he said

I had spyro in my 55 until I added flagfish and they did seem to enjoy eating it. No more spyro since their addition.

12-09-2009 08:48 PM
Retzius Update: I found the cure!!!

On Monday I added two small flagfish and as soon as I added them they started eating the Spirogyra algae. The next day when the lights came on at least 50% of the algae was gone.

So if your having troubles and the chemical warfare is not helping try a few flagfish. I watch these guys yank the threads and gobble up really long strands like spaghetti with my own eyes. Also, don't feed your flagfish. Mine have not eaten since I got them on Monday.
12-09-2009 08:07 PM
F22 Has anyone ever just tried adding some type of african cichlid to graze on it until it is gone. I would imagine tropheus or pseudotropheus would make short work of it.
12-09-2009 08:01 PM
Bonefish Update: Spirogyra is the Lex Luthor of algae. After blackout #2 + 1 ml Excel/gallon, there's still algae in the tank! I'm going to keep going with 1 ml Excel/gallon, reduced photoperiod, and no K/Fe for the next week. If that doesn't work, I'm surrendering.
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