I have just used furran - 2 to remove some blue green algae. I have dosed as per the instructions 4 cycles with water changes.

A lot of my twisted val has died. Ie the leaves have broken and now floating around the tank. I have a plant with large broad leaves this also has a clear patch in the middle and is about to break of. I did stop fert trying to stop blue green algae for a couple of days.

Any thoughts

Tanks

As far as i know Furan wont kill the algae, blue/green algae is the same as black hair algae, the only thing i know of that will treat it is Flourish Excel, or Siamese Algae Eaters will eat it, there are 2 on trade me but the auction closes at 7.20pm tonight so you would have to be quick.

Maybe it is my fault but BBA Black beard algae is what you are talking about

Blue /green is the cynobacteria type I have.

I got the above . slimey type

Hi

blue green alge Is not a alge but a bacteria (like you said before).Furan 2 is an antibiotic this will stop bacteria frome reproducing this go's for you bad and your good bac. you will need to put new bac. in your tank with cycle ore stress syme ore if you know some one with a fishtank use there water.(keep an eye on you amonia etc.) Why your plants break I don't know but was the bleu green alge on them? this might stopt the plants from geting there nutrision and might have weakend them.

bleu green alge apears most of the time in new tanks ore in tanks when the boi ballans is opset furran 2 is the fast way to get rid of it but fore the next time (hope this dus not happen) try to syphon it out and let the tank find it's ballens again this thakes ime but will not upset your bac.

scalare

The plants will have been damaged by the cyano. It forms a thick coating over the leaves so the plants can't photosynthesise. Mine did the same thing when I treated my tank except I didn't use Furan, I used Erythromycin. I also didn't renew bacteria or anything and don't believe 'live bacteria' products do a lot but others may disagree. I had no trouble dosing my tank (although I must say it was lightly stocked so there was no great load on the filtration anyway) and made sure I netted and siphoned out the cyano quickly as it died.

Heres an interesting thread about getting rid of BGA.

http://www.plantedtank.net/forums/showthread.php?t=16138&highlight=bga

Tom Barr's (PlantBrian 4th post down) method of blackout and KNO3 has quite a large following - and no antibiotics used!

You can dose it with Hydrogen peroxide to kill it (use a syringe to dose the BGA itself) or antibiotics or manually remove it etc, but what ever you do it will still come back before you know it unless you track down what is going wrong with your system. BGA is a symptom of something being wrong with your tank and unless the cause is treated it will just return again.

For an example I always get it if I add salt to the tank without cutting down with ferts a few days before since the plants slow down their growth and leave an excess of a macro nutrient like Phosphate.

I tried every other method before I resorted to erythromycin as I hate adding anything to a tank - except fish of course.

Over the many years I have kept fish and plants I had to combat blue green algae three times. I found the best method without resorting to chemicals was to do regular water changes and reduce the amount of light to the tank for a few days. Also as was mentioned in a previous post find out what caused the algae to grow in the first place.

Mine was due to over feeding the fish and adding to much plant food. Have not had a problem since sorting the feeding amount out. Also highly recommend having at least two Siamese algae eaters in to stop the other types of algae taking hold. Like most algae eaters though they will not touch blue-green algae

Mine came in on some infected plants. I tried the black-out and water changes too

I think it all started back when I reduce my air curtain so I could try DIY c02. The val is growing back I have brough some more plants and am trying the sera co2 pills from tonight instead of Flurish excel. Will keep you posted how it all goes on another thread in a week or so Or when I see a change.

Mike