a. brown color thingy - how is it like?
a.1. slimy, if u pick them up, it looks like a cluster of hair?
a.2. looks like a layer of coating?
a.3. short tuff of hair, feels like fur
for a.1. 50% chance BGA/50% is BBA - ref to a.3
for a.2. 90% chance BGA
to confirm BGA, check your pH if it is like 10 or 11, you definitely got BGA
b. green spot.
b.1. green dot on leaves?
b.2. powdery green stuff that looks like coating
for b.1. add K
for b.2 BGA
For fighting BGA, in steps
1. clean up composting material e.g roting leaves, fish poo, and food left over
2. re-cycle the water, good bacteria will eat up BGA (and BGA is actually poisonous to OTTO and SAE)
3. trim your plants, to improve water circulation BGA thrives on slow flowing water with lots of waste, good water flow will actually move the waste material around and hence easier to clean up.
4. clean your filter, BGA thrives also on the waste material inside the filter.
recmd tools
1. use the tank vacuum cleaner, LFS will know (a big tube that connects to a small tube device)
2. increase water acidity, all plants can tolerate ph4 for a short time (a few days) BGA can't stand acidity and BGA actually can change the water to alkali (I normally add 1 cap of white vinegar)
If you follow the SOP, and the BGA still hold strong, then you can resort to use medication (google for antibiotic for BGA, and there is a human antibiotic that you can use and if the clinic do sell to you, it only costs 50 sen per tablet)
Added on August 14, 2010, 12:41 amhow old?, i like the way you manage the japonica, mine always end up being too dense, did you trim them off time by time or re plant them?
very good info. my tank Ph should be around 6.5-7 according to drop checker.
done some changes on water circulation, trim quite some stem plant, overdose K, and finger cross lol, gonna shop for some otto @ midvalley later