Hi guys,

I am going to get some furan 2 today to try kill the blue green algae (cyanobacteria).

Wanting to know if this would also kill brown diatoms?

I don't know if furan 2 will work. I believe that erythromycin is what is normally used for cyano

Where do I get that from? Is it cheaper than furan?

Legally it is dearer as you have to go to the vet and get a script. Furan works.

Just give the tank a blackout for three days. That will kill the cyano. Try and get rid of as much as possible first so there is less polution.

I've done this before when I had cyano and it works wonders, not need for fancy chemicals and you can spend your money on more plants or something else :thup:

The 3 day black out works wonders :thup:

I would do a black out, and have done in the past, however I have plants now, and scared they will die along with the cyano...

plants should be fine

Hmmm i suppose they would recover.....

The BGA only came when i got a new bulb for the light hood

I had plants (not a lot though) when I had the cyano and they survived the blackout with no problems :thup:

I've found though that if the tank is chocca full with plants you shouldn't have any problems with algae at all.

Does the 3 day black out work for all types of algae??? Just wondering :dunno:

Thanks,

Caper

No but it can be extremely effective for cyano - depending on the cause.

Cyano is not algae.

Thanks Caryl

Caper