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According to Hoppy, 15-30 micromols is considered low light although other people use different ranges for low, medium and high light. Still, I don't think it would be a good idea to go much lower than 20 micromols.

That's what I figured, I'm somewhere right around 20-23 micromols, do you think most of these plants can grow, or even thrive, given the right nutes, but no co2?


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i have a few hygrophila polysperma that didn't anchor well to the substrate and now are floating....will the plants survive like this, or do they need to be anchored to the substrate ??
 

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i have a few hygrophila polysperma that didn't anchor well to the substrate and now are floating....will the plants survive like this, or do they need to be anchored to the substrate ??
It will start to grow long roots up the stem i have a few sunset hygros like that now sorry i first gave the wrong info.
 

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Floating plants don't know where "up" is, so they tend to grow in a gnarled form, twisting, looping around, etc. Then when you finally plant them in the substrate it takes quite awhile for them to begin to grow up instead of in random directions.

You normally plant stem plants with no roots on them. They are just cuttings. You should poke them down into the substrate as deep as you can, preferably at an angle, so they can't float back out. This is easy with long tweezers.
 

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Hoppy are you saying that if I buy a stem plant that has roots I should cut it to a bare stem and plant it?


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No, I'm not saying that. Most stem plants are cuttings from other plants, so they are rootless when you get them. Most of us tend to prune our stem plants and plant the cut off parts to get a denser growth of that plant, or to get rid of the bad looking base of the plant. There really isn't any reason to plant rooted stem plants, since they quickly send out new roots if there are few or no roots already there. In natural settings many, if not most stem plants reproduce in part by shedding the top part which floats away and eventually roots itself back into shallow water. Just think, the stem plant cutting you get may be a piece of a 100 year old plant!!:icon_smil
 

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Hoppy are you saying that if I buy a stem plant that has roots I should cut it to a bare stem and plant it?
Hoppy is right, but I am not sure he answered your question directly.
If I do get stem plants with roots, I do cut most, if not all of the roots, off before planting. The existing roots will most likely rot anyways.

With rozette plants like swords, I trim the roots to about 2", just long enough to keep the plant in the substrate.

The above does not apply to rizhome plants like anubias and ferns and I tend to leave the roots of crypts alone.

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Very good listing. Was pondering with the idea of setting up a garden for a very long time. These suggestions should help.
 

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I'm loving this list- I just set up a low-tech tank and I'd love to add more than the crypts, vals, and anubias nana that's in there now. However, I'm thinking I should've added soil. Do you have any suggestions for fertilizing a simple gravel-bottomed tank?
 

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Limnophila indica

Limnophila indica needs to be on this list.........
 

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Approved?

Is this list still considered a good directory of plants to grow in low/med light with no co2?

Added Ceratopteris siliquosa and Hygrophila balsamica. I am also going to experiment with Myriphyllum mattogrossense, Shinnersia ricularis, Cardamine lyrata, and Nymphoides sp. Taiwan.

B=Background,M=Midground,F=Foreground,FL=Floater,A =Anywhere,

FERNS & MOSSES
A-Marimo Ball- Cladophora aegagrophila
B-African Water Fern - Bolbitis heudelotii
B/FL-Watersprite - Ceratopteris thalictroides
B/FL- Thread Leaf Watersprite - Ceratopteris siliquosa
A-Pheonix Moss - Fissidens fontanus
A-Singapore Fissidens-Fissidens sp. "Singapore"
A-Zipper Moss - Fissidens zippelianus
A-Willow Moss - Fontinalis antipyretica
M-Wavy Leaf Java Fern- Microsorum pteropus undulata
M-Tropica Java Fern-Microsurm pteropus 'tropica'
M-Philippine Java Fern - Microsorum pteropus 'Philippine'
M-Java Fern - Microsorum pteropus
M-Red Java fern - Microsorum pteropus "red"
M-Windelov Java Fern - Microsorum pteropus 'Windelov'
M-Narrow Leaf Java Fern - Microsorum pteropus v. 'narrow leaf'
M-Needle Leaf Java Fern- Microsorum pteropus 'needle leaf'
A-Pellia - Monosolenium tenerum
A-Mini Pellia - Riccardia chamedryfolia
F/FL-Riccia - Riccia fluitans
A-Round Pellia - Süßwassertang
A-Flame Moss - Taxiphyllum alternans
A-Java Moss - Taxiphyllum barbieri
A-Peacock Moss - Taxiphyllum sp. 'peacock'
A-Taiwan Moss - Taxiphyllum sp.
A-Singapore Moss - Vesicularia dubyana
A-Christmas Moss - Vesicularia montagnei
A-Erect Moss - Vesicularia reticulata
F-Water Clover - Mariselia minuta
F-Marsilea hirsuta
F-Four Leaf Clover - Mariselia quadrifolia

STEM PLANTS
B-Waterwheel Plant - Aldrovanda vesiculosa
B-Bacopa - Bacopa caroliniana
B-Moneywort - Bocapa monnieri
B/FL-Hornwort - Ceratophylum demersum
B/F-LWatersprite - Ceratopteris thalictroides
B/FL-Anacharis - Egeria densa
B-American Waterweed- Elodea canadensis
F-HC- Hemianthus callitrichoides
B-Stargrass - Heteranthera zosterifolia
B/FL-Brazilian Pennywort - Hydrocotyle leucocephala
M-Water Pennywort - Hydrocotyle ranunculoides
B-Ceylon Hygro - Hygrophila polysperma 'Ceylon'
B-Giant Hygro - Hygrophila corymbosa
B-Water Wisteria - Hygrophila difformis
B-Fine Leafed Wisteria- Hygrophila balsamica
B-Green Hygro - Hygrophila polysperma
B-Sunset Hygro - Hygrophila polysperma 'Rosanervig'
B-Dwarf Ambulia - Limnophila sessiliflora
B-Red Ludwigia- Ludwigia repens
B/FL-Parrots Feather - Myriophyllum aquaticum
B-Guppy Grass - Najas guadalupensis
F/M-Downoi - Pogostemon helferi
B-Rotala Indica - Rotala indica
B-Rotala Rotundifolia - Rotala rotundifolia
B-Rotala Rotundifolia sp. Green - Rotala rotundifolia sp. 'Green'
B-Combomba - Combomba carolina

FLOATERS
B/FL-Hornwort - Ceratophylum demersum
B/F-LWatersprite - Ceratopteris thalictroides
B/FL- Thread Leaf Watersprite - Ceratopteris siliquosa
B/FL-Anacharis - Egeria densa
B/FL-Brazilian Pennywort - Hydrocotyle leucocephala
B/FL-Parrots Feather - Myriophyllum aquaticum
FL-Duckweed - Lemna minor
FL-Red Root Floater - Phyllanthus fluitans
F/FL-Riccia - Riccia fluitans
FL-Giant Slavinia - Salvinia molesta

CRYPTOCORYNE
M-Crypt Affinis - Cryptocoryne affinis
B-Crypt Aponogetifolia - Cryptocoryne aponogetifolia
B-Crypt Balansae - Cryptocoryne balansae
M-Crypt Becketii - Cryptcoryne becketii
M-Crypt Lutea - Cryptocoryne lutea
F-Micro Crypt - Cryptocoryne petchii
F-Pygmy Crypt - Cryptocoryne pygmaea
B-Crypt retrospiralis - Cryptocoryne retrospiralis
B-Crypt spiralis - Cryptocoryne spiralis
M-Crypt Walkeri - Cryptocoryne walkeri
M-Crypt Wendtii - Cryptocoryne wendtii
M-Crypt Willisi - Cryptocoryne willisi
F- Crypt Parva - Cryptocoryne parva
M- Crypt Pontederiifolia - Cryptocoryne pontederiifolia

ANUBIAS
M-Anubias barteri - Anubias barteri
M-Anubias barteri 'marble' - Anubias barteri 'marble'
M-Coffee leaf anubias - Anubias barteri v. 'coffeefolia'
A-Marbled Nana - Anubias barteri nana 'Marble'
M-Anubias barteri v. 'glabra' - Anubias barteri v. 'glabra'
A-Golden nana - Anubias barteri v. 'nana golden'
A-Anubias nana - Anubias barteri v. 'nana'
M-Narrow leaf nana - Anubias barteri v. 'nana narrow leaf'
A-Petite nana - Anubias barteri v. nana 'petite'
M- Minima
B-Hastifolia - Anubias hastifolia
B-Barteri Round Leaf - Anubias barteri v. ‘Round Leaf’
B-Gigantea - Anubias gigantea
B-Congensis - Anubias congensis
B-Lanceolota - Anubias lanceolota
M-Gracilis - Anubias gracilis
M-Anubias Barteri v Angustifolia - Anubias barteri v angustifolia
M-Caladiifolia -Anubias barteri v Caladiifolia
M-Anubias Afzelli - Anubias afzelli

SWORD PLANTS
B-Amazon Sword - Echinodorus amazonicus
B-Ruffle Sword - Echinodorus major
M-Melon Sword - Echinodorus osiris
M-Tropica Sword - Echinodorus parviflorus 'Tropica'
M-Red Flame Sword - Echinodorus 'Red Special'
F-Pygmy Chain Sword - Echinodorus tenellus or Helanthium tenellum
B-Uruguay Amazon Sword - Echinodorus uruguayensis
B-Argentine Sword - Echinodrous argentinensis

LILY'S
F-Lotus- Nymphaea pubescens M-Tiger Lotus - Nymphaea zenkeri

GRASSES
F- Dwarf Hairgrass - Elocharis acicularis
B- Giant Hairgrass - Elocharis montevidensis
B-Water Celery- Vallisneria americana
B-Contortion Val - Vallisneria asiatica
B-Vallisneria natans
B-Valliseneria rubra
N-Corkscrew Val - Vallisneria tortifolia
M-Dwarf Sag- Sagittaria subulata
B-Crinum calimistratum
B-Onion Plant - Crinum thaianum
F-Micro Sword - Lilaeopsis braziliensis
B-Crinum aquatica

APONOGETONS
M-Aponogeton ulvaceous
B-Aponogeton bouvianus
B-Aponogeton crispus
B-Aponogeton elongatus
B-Aponogeton undulatus
B-Rigidifolius - Aponogeton rigidifolius
 

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The list should be seen as an opinion, which is not necessarily correct. For example, HC- Hemianthus callitrichoides will not grow well at all without CO2 and with low light. And, many of the stem plants listed will grow, but will be a big disappointment, with low light and no CO2 or Excel.

When this list was started, and added to, people were judging light intensity solely by watts per gallon, without even a universal agreement on what watts per gallon meant low light. We have progressed considerably since then.
 

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How about developing a list of plants in order of general light tolerance starting from the lowest?

Java Moss
All Anubias
All Java Fern
Lotus?
?
 
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