Thanks for everyone who has responded, I'm really impressed with the warmth and helfulness of this community!
I'm going to follow the advice on light, CO2 and Ferts - and of course my maintenance practices, which have been chucking organics everywhere in the tank!
I have a few questions from the advice given:
1. Will the BBA go away after a while of following the new advice, or do I need to take out all the hardscape and nuke it with Hydrogen Peroxide or similar and replace?
2. What light intensity do you advise I should use? i've dropped to 50% (and some of the fish are out more rather than hiding in the shade), so I go down more than that?
3. Should the CO2 stay at a 1 PH drop regardless of light intensity?
4. Should the ferts drop if light is lower - presumably that will give slower growth?
5. In the past I've found that flow in some areas suffers when there's more plant mass due to stem plants growing up and taking lots of space (like my rotala is doing now), any advice/insight into this? I think my flow is really good in 70% of the tank, but not sure about the rest.
Thanks!
Hi,
if you get the basics right: weekly water changes, light, ferts and CO2, BBA will stop growing. And with right CO2 levels I mean levels around 30ppm. If you have levels somewhere 10-15 BBA will just keep growing.
It's bit tricky to get the levels right, for me it took couple of weeks of measuring KH/PH levels and adjusting the drops/second, the time when the co2 is turned on, and the amount of light. I have now CO2 on 2,5 hours before the lights. The amount of light also affects the CO2-levels, more light=less CO2 and vice versa.
Once you have the basics, you have the get rid of the existing BBA. Shrimps and SAE won't eat it, and it won't disappear by itself.
Time to bring in the big guns! Drain as much water as possible, take away your face and spray the affected areas with glutardehyde and water mixture 1/3. Wait for 5 minutes and fill the tank. Do a 50% water change right after. The BBA is gone in a week. Caution! BBA will certainly die, but it can melt your plants. So try it first on a smaller area.
A safer way is to spray the tank with 3% hydrogen peroxide, but test this too before spraying the whole tank!
Third way is to use bleach. Remove the plants, dip them in 1/ 3 bleach/water for 30 seconds and right after rinse them in water with dechlorinator, like Tetra aqua safe. The bba is gone immediately.
PS, health plants are resistant to almost any algae, and besides CO2 pay attention to ferts, especially sufficent nitrogen and potassium levels. In my humble experience they are the most likely cause to a deficiency , even if you dose your fert of choice according to instructions. And the third one to monitor in magnesium, especially if you have Anubis that start growing new leaves that look somehow twisted and pale.
Matti