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Floating Plant Suggestion
Good afternoon all, I could use a good recommendation for a floating plant, or if you think I even should have one.
I have a 20g tall, with a basic 14W T8 light, so low light.
In the tank I have Amazon Sword, Wisteria, Java Fern, and Anubias Nana.
I know the Wisteria needs all the light it can get, so if I get something floating I'll need to contain it to one side of the tank, and since a 20g isn't very large there isn't a lot of surface area. (assuming the Wisteria lasts, I don't know if I'll keep it. If long term it grows up to the top with few leaves and bare stems I may get ride of it)
The usual suspects I guess would be Duckweed, Water Sprite, or Brazilian Pennywort. Reading another recent thread that mentioned Java Moss, I read the profile and saw it can be left floating... how well does that work? I was thinking about it, but for my driftwood. It has the Anubias Nana on it though, could they co-exist or would the Java Moss try and take over?
You are right to consider floating plants as decreasing your already limited light. I would go with Brazilian Pennywort in this situation, and it grows in strands and can be spread out and controlled better than something like Water Sprite, a single plant of which would easily cover the entire surface if allowed to. Duckweed would be good if controlled, as it would probably move around.
I'll be interested to know how the Wisteria does; off the top i would not expect it to last. Mine wouldn't in my 30-inch 29g nor in the 70g with two tubes full length. But that's fine; some plants do well in this tank or that tank, others don't. I've tried many and stick with what does. Fewer species is also better biologically, as some plants do inhibit others and the more there are of different species the more likely one will be like this.
riccia is also a good option for floating. it doesn't block out much light.
I've actually noticed something with my Wisteria. The three on the left side are doing pretty good, one in particular is showing excellent growth. The three on the right side are not doing well.
Two factors possibly, the HOB filter is on the right so there is more current. The left gets ~1 hour of sunlight very late in the afternoon right before the sun falls below the horizon. I'm thinking the brief sunlight is what's doing it, more than the filter being detrimental. Hopefully that little extra light doesn't mean algae in my future ;)
I have riccia in one of my tanks. I tend to stay pretty spread out most of the time.
I have three Echinodorus cordifolius in my 115g, and one is in the direct force of the filter. When I set the tank up I thought this would not likely matter, and the flow at that end is deliberate for the trio of spotted driftwood catfish that live in the wood onto which the flow is directed. The sword in that spot has been sending out new leaves like the others, but they quickly yellow and fail. Yesterday I moved this plant to the opposite end of the tank. I am expecting it to improve now that it is out of the water flow.
Wisteria is a marsh plant, and one is not likely to encounter much water flow in a marsh.;-)
Interesting, that leads into the question of what IS a good plant for a stream?
I don't think the current is too bad in my tank, I keep it rather full, slightly above the HOB's output ramp (or whatever that would be called). It keeps the surface calm at least.
How about frogbit or water lettuce? I have water lettuce in my 40g and I love the effect they give to the tank. Plus they're good with competing against algae for nutrients.
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