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Nuking BGA
Hello to everyone.I have a 65 gallon tank that had BGA about six months ago
which I sucessfully treated with erythromycin. I guess I was not aware of the
underlying cause that started it and it is back.I think I finally have the nutrient
balance down now but the BGA is stll here to stay regardless. I am positive it is
Blue-Green Algae which I know is actually a gram negative bacteria. I tried using
the erythro. again but the bacteria are now resistant to it because I possibly did
not complete the full dosage the first time. I also tried using hydrogen peroxide at
different dosages for several days on a couple of occassions. I would to get rid it
for good because it is getting worse daily. My iron is about .1, nitrate about 4.4,
gh about 7deg., kh 4deg. I dose tropica master grow at about 25ml a week. I also
add a little KNO3(1/4 tsp. weekly) along with Seachem's potassium supplement(14
ml a week.). I temporarily stopped the fertilization while the problem exists. The
plants and fish all seem to be fine also. I do water changes every two weeks and
change 20 gallons with reconstituted RO water(I use the seachem equilibrium, acid
buffer and alkaline buffer). My PH is about 6.8 controlled by automatic CO2
injection. I have read up on using potassium permangenate on the krib and from
the archives of this list and have purchased some online. I am not sure of duration
of treatment though . Because of all the warnings I have read I know the dangers
behind this product. I found information on the web about dosage for using 1/8
grain to the gallon which I have been using for the past week (I figured a dosage
of .486 grams) but the BGA has only been getting slightly better.I dose once daily
,diluted with R.O. water. My water now is also a little cloudy but it may be from a
green water outbreak or the nitrifing bacteria dying also(I tested for nitrite and it
was zero). After I add the potassium permangenate the water only stays purple for
a couple of hours and then goes back to being cloudy so it may be exhausting
itself prematurely because of other organics in the tank. I thought a product like
that would rid the bacteria in no time. I just wanted to know if anyone could give
me clear advice on dosage and duration of potassium permangenate in a planted
aquarium from their own experiences. Thanks for any help.