What stem plants grow like weed in your tank - Page 3 - The Planted Tank Forum
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post #31 of 48 (permalink) Old 02-01-2020, 01:39 PM
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Cabomba caroliniana for me, but is banned in California, Connecticut, Maine, New Hampshire, Vermont, and Washington state because it's such a weed. Check your plants for legality before you buy, the fastest growers may be on the naughty list and "the man" has knocked on some forum members doors as seen in other threads. Just sayin...

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post #32 of 48 (permalink) Old 02-01-2020, 06:18 PM
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Ranunculus inundatus is the one for me.
Runners will jump across the tank very quickly during the week.
40-50 can end up in the trash over a weeks time.
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Left to it's own devices would spread and choke out the whole tank.
Hence the name "inundatus"?
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post #33 of 48 (permalink) Old 02-02-2020, 12:27 AM
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Pogostemon stellatus "octopus." I planted 20 stems, each about 4 inches long, on 12/15/19. It was slow at first, but then took off. By week four, the tops were floating across the tank and, though it looked kinda cool, I trimmed them back. The stems had become really thick in places, too... like between an eighth-inch and a quarter-inch. Because there was so much of the stuff already growing, I just tossed the trimmings instead of replanting. And of course I'm getting branching at the trim points, and will probably need to trim again next week. It's crazy.

My tank is a 30-long, with 3-year old Amazonia under gravel, PAR value of ~50 at the substrate, and I dose 3mL of NilocG Liquid Macros and Micros every other day. I re-scaped this aquarium last month, and wanted the whole back of the tank to be one wall of a single plant. I considered Italian Val, but chose this. The other stem plants I've tried in the past -- Mayaca fluviatilis and Proserpinaca palustris -- failed fairly quickly.
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post #34 of 48 (permalink) Old 02-02-2020, 11:22 AM Thread Starter
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Pogostemon stellatus "octopus." I planted 20 stems, each about 4 inches long, on 12/15/19. It was slow at first, but then took off. By week four, the tops were floating across the tank and, though it looked kinda cool, I trimmed them back. The stems had become really thick in places, too... like between an eighth-inch and a quarter-inch. Because there was so much of the stuff already growing, I just tossed the trimmings instead of replanting. And of course I'm getting branching at the trim points, and will probably need to trim again next week. It's crazy.

My tank is a 30-long, with 3-year old Amazonia under gravel, PAR value of ~50 at the substrate, and I dose 3mL of NilocG Liquid Macros and Micros every other day. I re-scaped this aquarium last month, and wanted the whole back of the tank to be one wall of a single plant. I considered Italian Val, but chose this. The other stem plants I've tried in the past -- Mayaca fluviatilis and Proserpinaca palustris -- failed fairly quickly.
If you go by plant profile, Pogostemon stellatu is rated moderate to difficult. It’s surprising that it grows like weed in your tank. On the other hand, Proserpinaca palustris, rated easy to moderate, failed in your tank, but does fine in mine, not weedy but slow and steady.

It’s informative that you specified your growing conditions so I can compare experience on the same basis. 50PAR at the substrate is what I have and typical of Amano ADA setups. The behavior of stem plants IME under medium light is highly variable, some take off, some just hang on, and others fail. If I had high light, 100+PAR, I guess variability is not much a factor.
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post #35 of 48 (permalink) Old 02-02-2020, 11:38 PM
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I tried rotala rotundifolia, Ludwigian repens, mermaid weed, limophilia aromatica, and a few other species of the said genus, and none grow fast, often developed weak root and bare lower stems.
I believe the reason you have had success with only one plant is because it is the only one that can deal with a nutrient deficiency you might have. It would be helpful to know what fertilizers you are using.

Bare lower stems could be a sign of nutrient deficiency issues with one of the mobile nutrients (N,P,K,Mg, Cl). Mg deficiency is the most common. And it is often associated with low GH soft water. I have read that chlorine deficiency can cause stunted roots but I have not seen it.
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post #36 of 48 (permalink) Old 02-03-2020, 04:17 AM Thread Starter
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I believe the reason you have had success with only one plant is because it is the only one that can deal with a nutrient deficiency you might have. It would be helpful to know what fertilizers you are using.

Bare lower stems could be a sign of nutrient deficiency issues with one of the mobile nutrients (N,P,K,Mg, Cl). Mg deficiency is the most common. And it is often associated with low GH soft water. I have read that chlorine deficiency can cause stunted roots but I have not seen it.
I dose macros and micros weekly, chelated iron every other day, and substrate is dolomite gravel so plenty of Ca and Mg. All non stem (annubias, Java fern, bolbitis, Buce, sword and crypt) are thriving, so there is no nutrient deficiency, just not enough light many stems prefer. So I chose only easy stems. Most are holding, but not vigorous.
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post #37 of 48 (permalink) Old 02-03-2020, 04:55 PM
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Is Anacharis considered a stem plant? if so, they grow like wildfire! I love how fast they grow! I use to have a lot of them in my tanks when i was in CT however now that I am in SC i can no longer get them because they arent allowed to be shipped to the state. sucks
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post #38 of 48 (permalink) Old 02-03-2020, 06:13 PM
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I grew a lot of rotalas some green some red. The problem was I only have a 10 gallon so I couldnít keep up with the growth. I kept pulling out stems cutting them then replanting the tops. Finally, after two years, I have removed my last stem and I am doing a grow-out with my dwarf hair grass, microsword in the background and trying to get a little bit of dwarf baby tears to grow. all the best, john
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post #39 of 48 (permalink) Old 02-03-2020, 06:56 PM
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What stem plants grow like weed in your tank

I think my fastest growing plant was Ludwigia inclinata red. Itís growth was so explosive, I got rid of it after a 2 week trial (mind you... this was in a high-tech tank).

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post #40 of 48 (permalink) Old 02-03-2020, 07:26 PM
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I kept a nearly no tech (had a heater) high light soil based tank, no co2 or liquid co2. Myriophyllum Mattogrossense grew like a weed in that environment. Finally took the tank down because I was so lazy about trimming it and it was smothering out my other stems.

Due to photobuckets new bs cost for use of images on forums I have deleted all photobucket accounts. I apologize if you enjoyed or found my photos helpful.
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post #41 of 48 (permalink) Old 02-03-2020, 09:20 PM
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I'm surprised no one mentioned pearlweed.


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post #42 of 48 (permalink) Old 02-04-2020, 07:07 AM
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Hands down fastest aquarium plant for anyone IMO will be floaters namely water lettuce

Ambulia and another that looks like abulia but is orange/red grow very fast upwards, but their speed of rooting and shooting outwards is very slow and the stems seem to melt at the soil. I have a layer of mineralized organic soil below, then a mix of fluorite black and fluval stratum above. So it's not anaerobic, but they don't seem to root with a whole lot of vigor.

ironically the one that grows the fastest I haven't identified. Too lazy to post a thread. Looks a lot like a hydrophilia though and was actually a bonus mystery plant on an eBay order. Also ironically the one I actually wanted out of the order promptly melted died. But I'm happy with these ones too.

strangely enough my flame moss is growing super fast. Not what I expected out of it. It's outpacing my java moss by far
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post #43 of 48 (permalink) Old 02-04-2020, 07:11 AM
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ironically the one I haven't identified. Looks a lot like a hydrophilia though and was actually a bonus mystery plant on an eBay order. Also ironically the one I actually wanted out of the order promptly melted died. But I'm happy with these ones too.
Can you share a photo of it? Perhaps some our plant gurus on here can help ID it for you
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post #44 of 48 (permalink) Old 02-11-2020, 11:56 AM Thread Starter
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Here are pics of my weedy Hygrophila polysperma sunset on the right in just two week post pruning, versus skinny Luwidgea and shorty Mermaid weed and Limno aromatica on the left you can barely see. They are under the same light, but one stem grows weedy, others weakly. The Annubias surround them are doing fantastic with flowers blooming constantly, so the environmental conditions are fine for the right plants.

I am tossed up between choosing stems that grow too weedy that I need to prune frequently versus struggling stems that remain skinny and weak. I’m looking for Goldilock stems that don’t grow too fast or too slow, just reach maximum height and stop, and stay fully up and bottom.
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post #45 of 48 (permalink) Old 02-11-2020, 12:48 PM
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Duckweed!

...Oh, you said stem plants. Anacharis, rotala sp. 'green', and watersprite have all gone nuts for me. Like, I'm on the verge of getting rid of the watersprite and rotala because they keep taking over my tanks and I have no room for them. I had the anacharis years ago when I first started, but I killed it when I added salt to the tank. I remember it growing very fast, even with little light or fertilization.

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I am tossed up between choosing stems that grow too weedy that I need to prune frequently versus struggling stems that remain skinny and weak. I’m looking for Goldilock stems that don’t grow too fast or too slow, just reach maximum height and stop, and stay fully up and bottom.
If you find such mythical stems, please send me a PM.

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