I've been looking at the behaviour of my fish with tannins. I'm doing no testing or chemical analysis - just pure behaviour. I've tested in the past and my water chemistry hasn't moved significantly.
I have green tea, rooibos and decaffeinated black tea.
Green tea starts slowly when you suspend a bag in the tank. The results aren't immediate, but they become very dark after 24 hours. I go with one teabag per 10 gallons.
Rooibos stains the water faster, and gives a nice glow - a bit more golden looking compared to the dull dark of the green tea.
Decaff black tea gives a quicker version of what I see with the green tea - a heavy colour under my led lights, but a very natural blackwater tone.
Behaviour? I have some blackwater Hoplisoma concolor (ex Corydoras) that were hiding a lot under strong light. They have some reddish brown marking on the back half of their bodies, not unlike the 'new' concolor types that are selling for very high prices. They've gone from hiding a lot to being out and about almost instantly, once the tannins kicked in. I didn't get the same results from dimming the leds. Will they spawn? Who knows.
The Characins in the tanks are also more active, and like the Hoplisoma, their colours are suddenly more vibrant. I have H margitae and melanostichos in tannin tanks, along with cardinals and glowlights, and they look significantly better.
So many people hate brown water, but it gets results. The chemical changes aren't major, but the behavioural ones are good, with blackwater fish. They're often forest fish, and we tend to keep them like they're on an open savannah. Too much bright light gives them headaches?
I have green tea, rooibos and decaffeinated black tea.
Green tea starts slowly when you suspend a bag in the tank. The results aren't immediate, but they become very dark after 24 hours. I go with one teabag per 10 gallons.
Rooibos stains the water faster, and gives a nice glow - a bit more golden looking compared to the dull dark of the green tea.
Decaff black tea gives a quicker version of what I see with the green tea - a heavy colour under my led lights, but a very natural blackwater tone.
Behaviour? I have some blackwater Hoplisoma concolor (ex Corydoras) that were hiding a lot under strong light. They have some reddish brown marking on the back half of their bodies, not unlike the 'new' concolor types that are selling for very high prices. They've gone from hiding a lot to being out and about almost instantly, once the tannins kicked in. I didn't get the same results from dimming the leds. Will they spawn? Who knows.
The Characins in the tanks are also more active, and like the Hoplisoma, their colours are suddenly more vibrant. I have H margitae and melanostichos in tannin tanks, along with cardinals and glowlights, and they look significantly better.
So many people hate brown water, but it gets results. The chemical changes aren't major, but the behavioural ones are good, with blackwater fish. They're often forest fish, and we tend to keep them like they're on an open savannah. Too much bright light gives them headaches?
