Tropical Fish Keeping - Aquarium fish care and resources

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Ogre44 12-06-2011 06:33 PM

Sinking Anacharis
I have been searching my LFSes in vain for some floating plants, preferably either Pennywort or Watersprite, but to no avail.
I have read that Anacharis can be floated, and that I could find in abundance, so I bought some, but it keeps sinking.
I pull it to the surface and it floats for a while, and then it sinks again.
It appears that they would like to float, they have some roots growing down from them, and a couple appear to have little plantlets growing off of them but they all head for the bottom of the tank after a while.
Is this normal?
Did I but non-functioning plants?
Is it aliens?:roll:

kangy 12-06-2011 07:15 PM

What kind of filter do you have, they will float but if you have any sort of current from an HOB it will be enough to pull them down. I bought two clear heater suction cups and put the base of them in the loop (three each loop) and stuck it to the wall near the top of the water to keep them near the top, works fine looks a little funky IMO. I ordered a sponge filter that should be here Friday, after I remove the HOB I'll let them lose and see if they free float

Ogre44 12-06-2011 07:38 PM

It's an HOB filter, but it's heavily baffled for the comfort of my Betta.

kangy 12-08-2011 02:02 PM

Any downflow is probably enough to sink them. They appear to be only very slightly bouyant. I got the sponge last night, hooked it up, and removed the HOB. I then free floated the Anacharis, most of them are staying at or near the surface. One is hanging vertically, from my observations it appears the new growth floats better while the old "lower" portions which tend to sink. One of them actually got pulled down like a sinking ship from the bottom. I snipped off an inch off the bottom and it floats now. Maybe try trimming back any old lower part especially if it is browning as it seems to be less bouyant than fresh growth.

zof 12-08-2011 02:41 PM

Agreed remove some of the older growth on the stem and you should see more buoyancy, anacharis is known to change buoyancy through out the day as it produces oxygen, before and as you lights come on it might float lower but after the lights have been on for a while it should float to the top. This brings up another point, if you trim the older parts off and it still doesn't float then you might need to look at your lighting/nutrient situation.

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