Name: Eichhornia azurea|
I have had the pleasure of owning this type of plant. It was spectacular to watch as its leaves would sway in the current, it almost seemed to have control of them. The down side with this plant I found is that it is very sensitive to touch, and water currents, and bruises very easily. They are very rare to find, but if you do, grab one you won't regret it. I had mine for close to 12 months, in which time it looked to die off several times, then resproute new growth, eventually it died and I couldn't revive it.
I bought two of these plants from a private seller, I put one of them in a heavily fertilised tank with CO2 injection and high lighting and the other in a 'normal' tank. The one in the CO2 injected tank is flourishing while the one in the normal tank died out within the first week. I put it in the CO2 tank after I noticed it withering in an attempt to revive it, but to no avail. So beware, this plant does need high fertiliser, light and CO2!
I totally disagree with the CO2 needed for the Eichhornia azurea, mine not only are in a tank with undergravel filtration which is meant to be a no go with planted tanks (also have a bio filter) but they have no CO2. I do fertilize though, but I get growth of around 10 cm every 4 days or so. I can't keep up with them, I have to cut them back and replant the ends, so CO2 is not needed to grow these plants.
I also had this plant in my indoor tank, but after a few days its leaves were rotted and only the main stem was left. I decided to plant it in my outdoor tank with direct sunlight and within 2 weeks new leaves had emerged. Now it really looks great without CO2. I have potting soil as substrate, and it contains lots of iron as the soil is red in colour. It's very rare to find this plant.
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